Upsetting new PB at ATCO [Archive] - Cherokee SRT8 Forum

: Upsetting new PB at ATCO


SRT8_Paratrooper
11-28-2009, 02:08 PM
Well i finally got to run the jeep with the borla...the borla made a difference. my old PB was 13.3 @100....my new is 13.008 @ 104. i dont understand how i cant break into the 12's. i had 6 runs today trying to dial out the knock in andys tune....speaking of andy...he never got back to me regarding revisions on my tune. word on the street is im not the only one who hasn't been able to get a hold of him. soo hopefully i can figure something out or maybe andy will get back to me and help me get into the 12's. anyway before this turns into a b*tch session ill let it go. since i dont have a scanner ill just type up my slip..here it is.

R/T - .075
60' - 1.876
330 - 5.354
1/8 - 8.292
MPH - 82.01
1000 - 10.845
1/4 - 13.008
MPH - 104.31

im amazed how much the borla changed my performace...i know its been said before but BORLA S FTW!!!

alright ladies and gentlemen...im out.

Knuckles
11-28-2009, 02:31 PM
Damn bro! At least you came down some on your ET. I as well have emailed Any a few times and PM'd him and no response either. I even thread jacked his MHP TCM GB thread and still no word from him. Like I said before the jeep does feel more responsive as well but I ran the same with my 93 CAI canned tune as I did with the MHP tune. Also did some more data logging today and I am still getting a ST knock of 7.0 as the highest. Its obvious that this tune will not fix it self and will have to handled by someone that really knows what he is doing like the "TOONA". I think I am going to ride this one out and have the "TOONA" take care my tune once I get more mods on my BEAST.

cmn1
11-28-2009, 02:36 PM
Well i finally got to run the jeep with the borla...the borla made a difference. my old PB was 13.3 @100....my new is 13.008 @ 104. i dont understand how i cant break into the 12's. i had 6 runs today trying to dial out the knock in andys tune....speaking of andy...he never got back to me regarding revisions on my tune. word on the street is im not the only one who hasn't been able to get a hold of him. soo hopefully i can figure something out or maybe andy will get back to me and help me get into the 12's. anyway before this turns into a b*tch session ill let it go. since i dont have a scanner ill just type up my slip..here it is.

R/T - .075
60' - 1.876
330 - 5.354
1/8 - 8.292
MPH - 82.01
1000 - 10.845
1/4 - 13.008
MPH - 104.31

im amazed how much the borla changed my performace...i know its been said before but BORLA S FTW!!!

alright ladies and gentlemen...im out.

What was the difference in weather on the 2 days you were at the track? That really could be your difference.

SRT8_Paratrooper
11-28-2009, 02:36 PM
well i ran the 93 CAI tune today as well...as a comparison. with that tune i ran a 13.086 @ 103. so my increase def. due to my Borla and NOT Andy's tune.

Knuckles
11-28-2009, 02:38 PM
well i ran the 93 CAI tune today as well...as a comparison. with that tune i ran a 13.086 @ 103. so my increase def. due to my Borla and NOT Andy's tune.

Correct your times to see if you even dipped into the 12's. Its obvioys your 60 FT have to come down and your over all MPH have to come up to at least 105 to 106 to be in the 12's all day bro. You have the same problem as me.

SRT8_Paratrooper
11-28-2009, 02:39 PM
What was the difference in weather on the 2 days you were at the track? That really could be your difference.

48 degrees when i ran 13.3 and 50 degrees today...roughly same humidity...just a different time in the day...13.3 was at night and 13.008 was during the day

Knuckles
11-28-2009, 02:44 PM
Post your exact time at ATCO and I will correct your time for you bro.

jim383
11-28-2009, 08:48 PM
Well i finally got to run the jeep with the borla...the borla made a difference. my old PB was 13.3 @100....my new is 13.008 @ 104. i dont understand how i cant break into the 12's. i had 6 runs today trying to dial out the knock in andys tune....speaking of andy...he never got back to me regarding revisions on my tune. word on the street is im not the only one who hasn't been able to get a hold of him. soo hopefully i can figure something out or maybe andy will get back to me and help me get into the 12's. anyway before this turns into a b*tch session ill let it go. since i dont have a scanner ill just type up my slip..here it is.

R/T - .075
60' - 1.876
330 - 5.354
1/8 - 8.292
MPH - 82.01
1000 - 10.845
1/4 - 13.008
MPH - 104.31

im amazed how much the borla changed my performace...i know its been said before but BORLA S FTW!!!

alright ladies and gentlemen...im out.


Your 60' should at least be in the 1.77/1.80 and that alone put you in the 12.90 The nitto 420 have a hard compond (i think its 400 or 420 so they wont hook as much as the invos 280 compond). The oem gy run flts have a 260 compond and they hook for me.
The 1/8 mile conversion to 1/4 says your 8.292 = 12.995 in the 1/4 so your rite on par looks and it like you were runing in - da weather. That 1 problem with e mail tunes as you have to datalog them till you get them right. To be honest i have never seen a cat back exhaust help 3 tenths so it had to be the - da. I have no guys who have dynoed with stock exhaust then add the borla s and t and no change in power, but strange things can happen.

Matt McKenzie
11-28-2009, 09:29 PM
Times are just crazy on some of these beasts! When I ran my PB, I had a 3.5" Bwoody, CAI, MHP Tune and Magnaflow muffler, that's it...and I ran a 12.79 @ 105.4. Hopefully on a better day you will dip into the 12's...glad to see your dropped some off of your time!

m4xm1l10n
11-28-2009, 10:41 PM
Sorry to disagree with you but Borla gave you nothing , I hit 12.77 on Andy's tune and CAI Only on a 65* degree day . Now what you need is to revise your tune and you should be in the 12's no matter how bad you launch . Most members here Including Jose has being running on MHP CMR and still yet to see 12's . Revisions Andy , Help these guys out .

YoungMedic23
11-29-2009, 03:39 AM
People need to educate themselves more on DA

jim383
11-29-2009, 07:20 AM
Paul You Got That Right.

SRT8_Paratrooper
11-29-2009, 07:56 AM
look guys...i understand i can correct my times and might be in the 12's. but thats not the point. ive always been a person who feels that you run what you run. the number on the slip is your time. i know some...if not most people think im probably stupid for feeling that way but honestly thats just how i feel.

jim383
11-29-2009, 09:20 AM
look guys...i understand i can correct my times and might be in the 12's. but thats not the point. ive always been a person who feels that you run what you run. the number on the slip is your time. i know some...if not most people think im probably stupid for feeling that way but honestly thats just how i feel.

Well correcting times is just to compare as how can i compare my numbers to yours when running in ca at 3106 ft and your at atco running in - 250 ft da.

SRT8_Paratrooper
11-29-2009, 10:11 AM
Well correcting times is just to compare as how can i compare my numbers to yours when running in ca at 3106 ft and your at atco running in - 250 ft da.

i understand the point of it...but sometimes it seems to really favor ppl. i dont see how guys in CA or any other western state can claim they run 12's with a CAI and Tune when if we were to bring your rig to NJ im almost positive they wouldn't run as fast as theyre "corrected" times say they will. i know im not the only person who believes this.

Im not trying to start a fight or anything but seriously think about it.

m4xm1l10n
11-29-2009, 10:39 AM
i understand the point of it...but sometimes it seems to really favor ppl. i dont see how guys in CA or any other western state can claim they run 12's with a CAI and Tune when if we were to bring your rig to NJ im almost positive they wouldn't run as fast as theyre "corrected" times say they will. i know im not the only person who believes this.

Im not trying to start a fight or anything but seriously think about it.

Course they won't run faster , It's a mind thing i guess :rolleyes: , It's like Jimy383 with all the respect i don't think his running 12.367 @ 109.45 with just CAI+TUNE , No way in hell .

jim383
11-29-2009, 04:08 PM
m4xm1l10n JUST FOR FUN lets do this. List your mods and race wt and what DA you ran your 12.77@ 106.24 and we can compare out 2 rigs. My uncorrected info is in my sig except my 60' and they were 1.75 and 1.76. This way we can see if we out here on west coast can run as fast as you on east coast with same or fewer mods at higher DA.

jim383
11-29-2009, 04:49 PM
[quote=SRT8_Paratrooper;496028]i understand the point of it...but sometimes it seems to really favor ppl. i dont see how guys in CA or any other western state can claim they run 12's with a CAI and Tune when if we were to bring your rig to NJ im almost positive they wouldn't run as fast as theyre "corrected" times say they will. i know im not the only person who believes this.

Im not trying to start a fight or anything but seriously think about it.[/quote

My answer to quote above.
Im trying to help you not make fun of your tune or time. If this is the day you ran 11/28/09 and at 2pm i ran the DA and it was - 173 ft which is a big diff from 3106 when i ran in the 1/8 a 8.20@83.61. It corrected to 7.90@86.69.
Example. At 3106 ft DA your 13.00 would of been a 13.50 then corrected to sea level it would be a 13.00. You said your last time b4 the exhaust was 13.30 and almost same temp but at night so you see it can be done.
Mods of cai and a GOOD cmr tune can run in the 1290S in 1500 ft DA. Your trouble is your tune and 60' and your low mph in the 1/8 mile. With my old dyno tune i ran a 8.29 my mph was 83.32 @ 1363 ft da and my race wt is 5190. We have a jeep in the group that in 1275 DA ran 8.29 @ 83.25 and 12.92@ 104.50 at 5155 race wt with just a conservative (non cmr) dyno tune SO IT CAN BE DONE.
Some guys in the east just cant see how we on the west coast can run with them or faster with less mods and heavier race wt. Its all in 60',tune and race wt. Most guys when listing there times never list there DA or race wt witch is very important in comparing times. If were going to compare times then lets compare apples to apples not apples to oranges.

SRT8_Paratrooper
11-29-2009, 06:44 PM
Jim383,

i know it can be done...my point is simply this...i think most ppl are getting really favorable conditions...running a good time...but then using corrections saying their jeep runs this amazing time. my point is simply this...corrected times should be taken with a grain a salt. thats all...me personally i dont believe in them...your time is what your slip says...thats all.

as far as me feeling attacked by you...it was more paulie that was directed towards...im not the smartest man in the world but to say something like "ppl need to educate themselves" but not offer any help or words of wisdom with that just comes off as disrespectful. most ppl on this forum want nothing more than to see each other do better...im one of them. i posted this whole thing for one to share but for two to hopefully get andy to chime in and actually help me and his other customers he has yet to revise tunes for.

i do appreciate your help....so for what its worth thank you.

m4xm1l10n
11-29-2009, 07:45 PM
m4xm1l10n JUST FOR FUN lets do this. List your mods and race wt and what DA you ran your 12.77@ 106.24 and we can compare out 2 rigs. My uncorrected info is in my sig except my 60' and they were 1.75 and 1.76. This way we can see if we out here on west coast can run as fast as you on east coast with same or fewer mods at higher DA.

Jim I have no idea on what DA I ran , and I'm just speaking of facts . Like i mention before on a different thread about you running here @ NE Dragway with perfect DA you'll pull similar Numbers than Bill's 426 Beast with 469WHP running 12.068 so that putts you about .3 off of his numbers with only a CAI + TUNE ? It's just hard to believe Sorry , also my 12.77 at the same track you ran is more like high 13's ? The only explanation must be you having a Factory Beast among you .

Blown-WK
11-29-2009, 07:47 PM
Don't take it so personal bro. Congrats on the new PB but saying it was purely a result of the Borla S is simply not true. If you ran back to back runs with nothing but swapping on the Borla S, you would not gain anywhere near .3 in the 1/4.

SRT8_Paratrooper
11-29-2009, 07:53 PM
Don't take it so personal bro. Congrats on the new PB but saying it was purely a result of the Borla S is simply not true. If you ran back to back runs with nothing but swapping on the Borla S, you would not gain anywhere near .3 in the 1/4.

E-town and ATCO have identical DA's and conditions were the same for my 13.3 run and for my 13.008 run. the only difference was the borla...so i can understand its hard to believe but what else would it be?....SAME CAI, TUNE, Driver...only change was exhaust...so why did i run so much better?...if it wasn't the exhaust what was it?

Blown-WK
11-29-2009, 08:00 PM
E-town and ATCO have identical DA's and conditions were the same for my 13.3 run and for my 13.008 run. the only difference was the borla...so i can understand its hard to believe but what else would it be?....SAME CAI, TUNE, Driver...only change was exhaust...so why did i run so much better?...if it wasn't the exhaust what was it?

Not sure if you posted it but what track/day/time did you run the 13.3 and 13.0?

SRT8_Paratrooper
11-29-2009, 08:04 PM
Not sure if you posted it but what track/day/time did you run the 13.3 and 13.0?

10/21 - 13.3 @ 100 - E town 9pm

11/28 - 13.008 @ 104 - ATCO 1230pm

i just did the corrected times with accurate weather conditions at dragtimes dot com and both were only dropped by about 5/1000 of a second...so no change.

Knuckles
11-29-2009, 11:48 PM
10/21 - 13.3 @ 100 - E town 9pm

11/28 - 13.008 @ 104 - ATCO 1230pm

i just did the corrected times with accurate weather conditions at dragtimes dot com and both were only dropped by about 5/1000 of a second...so no change.

Like I said before me and you have the exact same problem and almost the exact same mods. So either get your current tune revised if not get rid of it and get one from someone who will accept a data log from you. Keep us posted when you switch it out or if you ever get it revised man. Good luck bro!

jim383
11-30-2009, 05:19 AM
10/21 - 13.3 @ 100 - E town 9pm

11/28 - 13.008 @ 104 - ATCO 1230pm

i just did the corrected times with accurate weather conditions at dragtimes dot com and both were only dropped by about 5/1000 of a second...so no change.

Ok ill DA both runs for you. As you can see not much diff in DA. Ill agree with Chris the cat back exhaust didnt get you no 3 thenths gain so it has to be in the tune. 1 things that really helped me out was upgrading the croms on my predator from 8R20 TO 9R12. Another thing was i had to disconect my battery to clean the post and that through off all my good adaptives and the pcm had to relearn WOT again all over as i went to the track 2 days later and i was off 1 tenth and 1 mph that night then next time out i was back run the good numbers and the DA was only 100 ft lower. You need to get that 60' down in the 1.77/ 1.80 and your 1/8 mph is about 1.5 mph to low for 8.29 in my opinion.
Englishtown
Based on: 10/21/09 9PM
Temp: 53.7°
Humidity: 90%
Track Altitude: 86 feet
Pressure: 30.07 in.
Density Altitude = -253 feet - NOTE
Uncorrected 13.30 @ 100.00
Corrected 13.33 @ 99.75

ATCO
Based on: 11/28/09 12:30PM
Temp: 51.1°
Humidity: 39%
Track Altitude: 93 feet
Pressure: 29.76 in.
Density Altitude = -161 feet - NOTE
Uncorrected 13.008 @ 104.00
Corrected 13.03 @ 103.83

jim383
11-30-2009, 06:14 AM
Well i finally got to run the jeep with the borla...the borla made a difference. my old PB was 13.3 @100....my new is 13.008 @ 104. i dont understand how i cant break into the 12's. i had 6 runs today trying to dial out the knock in andys tune....speaking of andy...he never got back to me regarding revisions on my tune. word on the street is im not the only one who hasn't been able to get a hold of him. soo hopefully i can figure something out or maybe andy will get back to me and help me get into the 12's. anyway before this turns into a b*tch session ill let it go. since i dont have a scanner ill just type up my slip..here it is.
im amazed how much the borla changed my performace...i know its been said before but BORLA S FTW!!!

alright ladies and gentlemen...im out.

Ill compare mY 1/8 MILE 8.29 with your 8.29 and show you the diff in tunes as this was from my 1st ( NON CMR) DYNO TUNE OF 357 HP AND WITH THE PREDATOR AT 8R20. You have a runner all you need to do is get the tune ironed out. Tell me what options you have from the factory and your body wt and ill tell you your race wt. Ill try to help you get that 60' down.
YOURS....................MINE DA WAS 1527 FT RACE WT 5190
R/T - .075............=.501 .500 TREE
60' - 1.876.............1.791 ON GY RUN FLATS air at 40 front 35 rear cold
330 - 5.354.............5.323
1/8 - 8.292.............8.292
MPH - 82.01............83.00 Your race wt could be heavier than mine ot its the tune holding your speed down.
Heres what i do when i go out to race. Hope it helps you.
1-bring 20 lbs of ice+ 6 bags of big freezer zip lock bags of ice to cool manifold between runs and let it cool at least 1.5 hrs. As the ice melts i pour that ice water over the manifold then put the ice bags back on as i use 2 on top 2 ea side.
2-take out all floor matts,rear lift lid and rear pull tarp as that is 21lbs.
3-1/4 or less gas.
4- lauch at idle with t/c off. (you may want to try pulling the abs pump fuse 30 amp pink 1 in fuse box) This helped me 1 tenth when i was bone stock but after the cmr dyno tune the t/c off button does the same thing now.
5- I drive thru the water box then do 2 short launches to get water off tires and try to keep the rpm below 2000 to avoid a limp mode condition.
6- put shifter in 1st gear in manual mode and let it shift its self. I tried putting it in drive but sometimes it will short shift the 1-2 shift at 5500.

SRT8_Paratrooper
11-30-2009, 07:46 AM
Ill compare mY 1/8 MILE 8.29 with your 8.29 and show you the diff in tunes as this was from my 1st ( NON CMR) DYNO TUNE OF 357 HP AND WITH THE PREDATOR AT 8R20. You have a runner all you need to do is get the tune ironed out. Tell me what options you have from the factory and your body wt and ill tell you your race wt. Ill try to help you get that 60' down.
YOURS....................MINE DA WAS 1527 FT RACE WT 5190
R/T - .075............=.501 .500 TREE
60' - 1.876.............1.791 ON GY RUN FLATS air at 40 front 35 rear cold
330 - 5.354.............5.323
1/8 - 8.292.............8.292
MPH - 82.01............83.00 Your race wt could be heavier than mine ot its the tune holding your speed down.
Heres what i do when i go out to race. Hope it helps you.
1-bring 20 lbs of ice+ 6 bags of big freezer zip lock bags of ice to cool manifold between runs and let it cool at least 1.5 hrs. As the ice melts i pour that ice water over the manifold then put the ice bags back on as i use 2 on top 2 ea side.
2-take out all floor matts,rear lift lid and rear pull tarp as that is 21lbs.
3-1/4 or less gas.
4- lauch at idle with t/c off. (you may want to try pulling the abs pump fuse 30 amp pink 1 in fuse box) This helped me 1 tenth when i was bone stock but after the cmr dyno tune the t/c off button does the same thing now.
5- I drive thru the water box then do 2 short launches to get water off tires and try to keep the rpm below 2000 to avoid a limp mode condition.
6- put shifter in 1st gear in manual mode and let it shift its self. I tried putting it in drive but sometimes it will short shift the 1-2 shift at 5500.

i have option 1 and 2 minus the rear dvd.
* i took out the rear tarp and lift lid...not the floor mats tho.
* i ran at less than 1/4 tank of fuel.
* never had the jeep weighed so i dont have race wt.
* i launch with the T/C off and in first...left foot on the brake and right foot over the gas...last amber light i punch it.
*haven't iced the block ever

one thing i notice when running was the jeep studdered between 2 -3 and once between 3-4 gear. once consistent thing was if felt like a lose of acceleration at 80mph.

i think i might contact AJ and talk to him about a tune...also do you think an Undrivepulley will do anything?

jim383
11-30-2009, 08:20 AM
i have option 1 and 2 minus the rear dvd.
* i took out the rear tarp and lift lid...not the floor mats tho.
* i ran at less than 1/4 tank of fuel.
* never had the jeep weighed so i dont have race wt.
* i launch with the T/C off and in first...left foot on the brake and right foot over the gas...last amber light i punch it.
*haven't iced the block ever

one thing i notice when running was the jeep studdered between 2 -3 and once between 3-4 gear. once consistent thing was if felt like a lose of acceleration at 80mph.

i think i might contact AJ and talk to him about a tune...also do you think an Undrivepulley will do anything?

This makes things worst as your race wt is 135 less than mine and that about 8 hundredths better in the 1/8 and 13 hundredths in the 1/4 than me if we had the same hp. Another thing is those tires are hurting you has there rubber compond is way to hard as the nitto invos have a 260 rating and the 420 a 420 rating. The lower the wear rating the softer the rubber as the gy run flats are also 260.
I dont think the pullies will help any unless you are supercharged. The studder could be that but it also could be trying to go into limp mode. My 60' are always in the 1.75 to 1.79 depending on if i spin or not.

SRT8_Paratrooper
11-30-2009, 08:30 AM
This makes things worst as your race wt is 135 less than mine and that about8 hundredths better in the 1/8 and 13 hundredths in the 1/4 than me if we had the same hp. Another thing is those tires are hurting you has there rubber compond is way to hard as the nitto invos have a 260 rating and the 420 a 420 rating. The lower the wear rating the softer the rubber as the gy run flats are also 260.

i cant really rock invo's all year rnd here in the jersey burbs. but basically what your saying and its seems to be the conclusion of everyone ive brought this problem to is that my tune is way off the mark. i email andy again...ill give him a chance to fix it...if he cant or wont...im going with AJ. im also gonna buy an underdrivepulley...hoping that might help out a bit as well. wish i had the money to go F/I right now but i dont so that will have to wait.

Knuckles
11-30-2009, 08:50 AM
i cant really rock invo's all year rnd here in the jersey burbs. but basically what your saying and its seems to be the conclusion of everyone ive brought this problem to is that my tune is way off the mark. i email andy again...ill give him a chance to fix it...if he cant or wont...im going with AJ. im also gonna buy an underdrivepulley...hoping that might help out a bit as well. wish i had the money to go F/I right now but i dont so that will have to wait.

Well just got a message from Andy on another thread and he said to email him direct. So I will PM you his email address so that you can send him your logs and CMR tune so that he can revise yours as well bro. Hopefully he can do something to keep as Happy!

bcm0018
11-30-2009, 01:31 PM
Correct your times to see if you even dipped into the 12's. Its obvioys your 60 FT have to come down and your over all MPH have to come up to at least 105 to 106 to be in the 12's all day bro. You have the same problem as me.

I was running 12.8-12.9 @ high 104 mph. He needs better 60' times and then hes fine.

How are you launching? Do you jack up the convertor or just mash the pedal on green?

Your 60' should at least be in the 1.77/1.80 and that alone put you in the 12.90 The nitto 420 have a hard compond (i think its 400 or 420 so they wont hook as much as the invos 280 compond). The oem gy run flts have a 260 compond and they hook for me.
The 1/8 mile conversion to 1/4 says your 8.292 = 12.995 in the 1/4 so your rite on par looks and it like you were runing in - da weather. That 1 problem with e mail tunes as you have to datalog them till you get them right. To be honest i have never seen a cat back exhaust help 3 tenths so it had to be the - da. I have no guys who have dynoed with stock exhaust then add the borla s and t and no change in power, but strange things can happen.

I agree that if the 60' improves you should be in the 12's. If not underdrive pulleys are cheap and I gained ~.2 with it.

SRT8_Paratrooper
11-30-2009, 01:35 PM
i put the jeep in 1st...last amber light stomp the gas...which is what chris told me to do.

i think i might get an underdrive pulley as well...plus andy has seemed to emerge from parts unknown so hopefully i can get a revision before ATCO 12/13.

m4xm1l10n
11-30-2009, 01:36 PM
If not underdrive pulleys are cheap and I gained ~.2 with it.

Tell me more :cool:

SRT8_Paratrooper
11-30-2009, 01:40 PM
Tell me more :cool:

i agree...do tell...how hard is the install or should i just pay someone to do it?

bcm0018
11-30-2009, 01:44 PM
i put the jeep in 1st...last amber light stomp the gas...which is what chris told me to do.

i think i might get an underdrive pulley as well...plus andy has seemed to emerge from parts unknown so hopefully i can get a revision before ATCO 12/13.

Yeah thats how I have got my best 60' too. Hopefully a revision helps, I went through all of the ones I had with mine.

Tell me more :cool:

My old PB was 12.845 @ 104.9. I got the the UD pulley and went 12.613 @107.42 :D It was about 3 weeks apart and at different tracks but I have run at them both in the past and havent had big differences between them. I made 4 passes in the 12.6XX range and a two 12.7's.

It also easy to install. I did it myself and if I had to do it again I bet I could do it in ~2 hours or less.

Knuckles
11-30-2009, 01:46 PM
i put the jeep in 1st...last amber light stomp the gas...which is what chris told me to do.

i think i might get an underdrive pulley as well...plus andy has seemed to emerge from parts unknown so hopefully i can get a revision before ATCO 12/13.

Thats the same way I launch but I think that the tune if dialed in right should get you in the 12's and you should not have to buy an underdrive pulley to do it.

bcm0018
11-30-2009, 01:53 PM
i agree...do tell...how hard is the install or should i just pay someone to do it?

There are really only a few issues that if your prepared for it wont take long at all.

1. The easiet way to remove and install teh new one is with an air gun and you have to remove teh fan which requires draining the radiator (allows room to use ar gun). Not that difficult.
2. You need to have the puller to remove the stock pulley.
3. You need a special tool or even a longer bolt will do to put the new pulley on.

I have access to the lifts and tools at a jeep/chrysler/dodge dealer so I am free to use them on the weekends.

If you decide to do it and are up for a drive I can do the install for you since your not too far away.

m4xm1l10n
11-30-2009, 01:55 PM
Thats the same way I launch but I think that the tune if dialed in right should get you in the 12's and you should not have to buy an underdrive pulley to do it.

Jose is right , with a good tune you should be in the 12's easily , on one of my runs a had a 1.940 60' and still ran 12.902@106.40 all my other runs were 1.822-1.827 60' and 12.7's-low 12.8 and i trap no lower than 105.70 MPH consistent .

Yeah thats how I have got my best 60' too. Hopefully a revision helps, I went through all of the ones I had with mine.



My old PB was 12.845 @ 104.9. I got the the UD pulley and went 12.613 @107.42 :D It was about 3 weeks apart and at different tracks but I have run at them both in the past and havent had big differences between them. I made 4 passes in the 12.6XX range and a two 12.7's.

It also easy to install. I did it myself and if I had to do it again I bet I could do it in ~2 hours or less.

I'm skeptical about the UD Pulley's as many had problems with them , Talking about overheating issue , battery etc etc . Could you clarify that ?
Thanks

Raist103
11-30-2009, 02:16 PM
didnt see you in the truck that night. i went by twice. one time i saw you we were in lanes i was behind you but we started to go. i was in the white 88 ta. got my best in that 11.59 118.9. ran the jeep yesterday tring to back up my 12.9 run but could nto get another 12. they had the water box so wet and spun each run 1.89-190 60ft 13.11-13.18. 104.5-8.

did meet another black srt8 jeep there cia and tune ran the same as me 13.18 and 13.10. he had superman stickers all over the back dont remember his name im bad that way

SRT8_Paratrooper
11-30-2009, 03:01 PM
didnt see you in the truck that night. i went by twice. one time i saw you we were in lanes i was behind you but we started to go. i was in the white 88 ta. got my best in that 11.59 118.9. ran the jeep yesterday tring to back up my 12.9 run but could nto get another 12. they had the water box so wet and spun each run 1.89-190 60ft 13.11-13.18. 104.5-8.

did meet another black srt8 jeep there cia and tune ran the same as me 13.18 and 13.10. he had superman stickers all over the back dont remember his name im bad that way

i got there at like 930 and stayed to about 2pm. i thought for sure when you got there my jeep would stand out cause i knew there weren't gonna be that many there lol.

bcm0018
12-03-2009, 05:58 AM
Jose is right , with a good tune you should be in the 12's easily , on one of my runs a had a 1.940 60' and still ran 12.902@106.40 all my other runs were 1.822-1.827 60' and 12.7's-low 12.8 and i trap no lower than 105.70 MPH consistent .



I'm skeptical about the UD Pulley's as many had problems with them , Talking about overheating issue , battery etc etc . Could you clarify that ?
Thanks

I did have an overheating issue but it was only when I first did it. I got a huge airpocket in the rad and it wasnt filling so started to overheat. Since I havent had any problems at all :D I even have the stock thermostat.