We finally have our 4wd dyno certified and running, we completed our training with the lead tech from dyno jet


see attached Dyno sheet

7.01 lbs of boost

474.46 AWD HP

473.44 AWD TQ

This run represents a max pull on a base kit

mods:

GSM Supercharger kit
Magnaflow Exhaust
GSM esp/fan mod

See attached



Scott Quaranta
GS Motorsports
562.777.1075

Impressive!!!

The wait was well worth it!

nice numbers

GSM, will you offer a smaller pulley for the blower to create more boost for those who decide to build their engines?

How are you handling fuel & timing management? Piggy-back processor? Is that a tuning issue that is showing up towards the end of the run? SAE correction would lower those numbers by about 2-3% but that is still an AWESOME graph. The A/F looks to be holding right around 12-1 which is nice & safe for a SC vehicle.

I really am impressed by the power output. My 03 Cobra at twice the boost level & more mods made almost exactly the same HP/TQ. I can't imagine how hard that the GC must run with that amount of power AND being able to put it to the ground! Great job, guys.:)

GSM, will you offer a smaller pulley for the blower to create more boost for those who decide to build their engines?


Yes ,

We have an overdrive setup that will push 12psi, we also have built 6.1's with forged internals ready to announce in the next week


Scott

How are you handling fuel & timing management? Piggy-back processor? Is that a tuning issue that is showing up towards the end of the run? SAE correction would lower those numbers by about 2-3% but that is still an AWESOME graph. The A/F looks to be holding right around 12-1 which is nice & safe for a SC vehicle.

I really am impressed by the power output. My 03 Cobra at twice the boost level & more mods made almost exactly the same HP/TQ. I can't imagine how hard that the GC must run with that amount of power AND being able to put it to the ground! Great job, guys.:)

The reason I stated that this represents a max pull on a base kit is that we did run the a/f between 11.2- 12.1 , we can set the a/f any were we want it with our hemi fuel & timing ecu. with only 7 psi at max rpm we can set the a/f dead fat if we wanted and we did a few pulls like that when we started out.


The SAE corrected was only 1hp difference because of the weather today

Thanks for the nice comments, the kit is our best yet and the Jeep is unreal fast and very smooth..!



Scott
GS Motorsports
562.777.1075

Scott,

Other then the SC, what other mods have been made on the Jeep?

Great! Does anyone know what the stock dyno numbers are so I can compare?

Scott,

Other then the SC, what other mods have been made on the Jeep?



mods:

GSM Supercharger kit
Magnaflow Exhaust
GSM esp/fan mod

Scott

As per the graph, nice numbers and fuel control..given the hub-bub about s/c's and the SRT in other threads, this dyno sheet makes me feel a lot better about the safe tune of your work. Those number are plenty for a stock motored vehicle. nyone looking to increase power from there will prolly need to address tranny/ diff/ t-case concerns IMHO.

Larry-I think the end of the graph shows fuel system limits, not tuning issues..but thats another opinion...LOL

You guy's gotta throw a set of Kooks headers on that bad boy.Great Work!!:)

Stock run on a mustang dyno was around 335. Could have been better if the ac was not on and the temp in the shop was not around 110 to 115.

Larry-I think the end of the graph shows fuel system limits, not tuning issues..but thats another opinion...LOL

That's kinda what I was getting at. Are the injectors maxed out on duty cycle? Is the fuel pump at its limit? Was spark blowout becoming an issue? The jaggedness of the HP/TQ curve was my concern....especially with the smoothing already set to 5.

That's kinda what I was getting at. Are the injectors maxed out on duty cycle? Is the fuel pump at its limit? Was spark blowout becoming an issue? The jaggedness of the HP/TQ curve was my concern....especially with the smoothing already set to 5.



The injectors are at 44% duty cycle at redline, which leaves plenty of room for more hp and also puts us right in the area of efficiency on the injector we are looking for. We could put larger injectors in and be at 10% duty cycle but you always want to run in the middle of the injector for good atomization.


The chop in the curve @5000 rpm represents us taking timing out on our ecu.




Scott

The reason I stated that this represents a max pull on a base kit is that we did run the a/f between 11.2- 12.1 , we can set the a/f any were we want it with our hemi fuel & timing ecu. with only 7 psi at max rpm we can set the a/f dead fat if we wanted and we did a few pulls like that when we started out.


The SAE corrected was only 1hp difference because of the weather today

Thanks for the nice comments, the kit is our best yet and the Jeep is unreal fast and very smooth..!



Scott
GS Motorsports
562.777.1075


Scott, I just purchased the kit and await delivery. I added the new heads and headers. are there any engine lights that are coming on?

The injectors are at 44% duty cycle at redline, which leaves plenty of room for more hp and also puts us right in the area of efficiency on the injector we are looking for. We could put larger injectors in and be at 10% duty cycle but you always want to run in the middle of the injector for good atomization.


The chop in the curve @5000 rpm represents us taking timing out on our ecu.




Scott

That would explain the shape of the graph. How much timing were you pulling? Usually you don't have to begin to pull timing until the boost begins to get above 4 psi. So you must have the pulley sized to reach full boost at about 6000 rpm. When does the boost begin to come in? From the looks of the graph, the power starts building rapidly a little before 3500. So I would guess that you start seeing boost about 2800 rpm.

Scott, I just purchased the kit and await delivery. I added the new heads and headers. are there any engine lights that are coming on?

Thank you,


no check engine lights.. on our jeep, but you will need the 02 sims for the headers


This kit is already been submitted for (Carb)50 state legal


Scott

That would explain the shape of the graph. How much timing were you pulling? Usually you don't have to begin to pull timing until the boost begins to get above 4 psi. So you must have the pulley sized to reach full boost at about 6000 rpm. When does the boost begin to come in? From the looks of the graph, the power starts building rapidly a little before 3500. So I would guess that you start seeing boost about 2800 rpm.


YES....

The Torque Curve is AWESOME ......the graph go's Straight UP to over 430lb of tq @ 3600 rpm or right when we hit the gas in 4th gear...WOW

The torque curve is unmatched for power adders so far on the Jeep


Scott

Wlhlee, I have the heads, headers, and PP intake and NO check engine light.

BTW, had my car dynoed - unfortunately I could not get an accurate number because I do not have the ESP mod. The car kept cutting the fuel (or however the Trac control works). Luckly Scott fed exed the ESP to me. IT will go on Monday. We will have it back on the dyno most likely on weds. I SHOULD HAVE LISTENED TO SCOTT LIKE FOUR MONTHS AGO! If you get the SC, you need to have this mod to dyno it. TRAC control SUCKS!!!!!!!!!!!!!!!!!!!!

Now we can draw a big smile :D

What are the expected HP figures for a vehilce with Headers, Heads, etc. I mean with the supercharger?

You mentioned a 12psi pulley, is it going to be ok with stock internals? or we need to upgrade?

Now we can draw a big smile :D

What are the expected HP figures for a vehilce with Headers, Heads, etc. I mean with the supercharger?

You mentioned a 12psi pulley, is it going to be ok with stock internals? or we need to upgrade?

The HP / TQ expected numbers can vary wildly, it is almost a science to dyno the jeep correctly with the quadra trac on a 4wd dyno.

We have already done one Supercharged SRT Jeep with our ported top end, headers and magnaflow, it was faster than ours for sure , but we will have it back soon for dynoing.


we should be in the low 500 hp/tq range with headers and ported heads.

One of the main benifits with the Ported heads and Intake is that the port veloicity can handle so much more volume and this is really benifical on the supercharged applications because it makes the power band smoother and when the intake temps are up you dont loose the efficency because the heads can still move the heavier charge of a warm day.


Scott

I hope you guys got all production and delivery issues squared away, cause the phone will probably start ringin a lot more now.
You guys really nailed it, congrats.

At approx 475 hp/tq, and approx 18% loss in power due to everything connected post-flywheel (tranny, wheels, etc.), you're looking at 560 HP on the engine, with 7 psi. That's impressive.

A 12 psi pulley wouldn't be safe for a high compression-ratio engine. I don't recommend it.

What you need now is the 7 liter stroker kit, the low-compression version, then you can raise the pressure to 12+ squares per inch. Given all the other bolt-ons, CAI, exhaust, headers, you might run 800-900 HP on that engine. Maybe a lot more. Of course, there already is a 7000 rpm mod. By the time you're done with all the other modifications, more fuel cut-off mods will be available, tested, safe. There same mod increases tranny response.. Oh how wonderful is the world of modding your car.

1000 hp? :D

Scott,

We are confused now! what is basic boost for the kit? 5 or 7psi?

What is the next level for the kit? 8 , 10 of 12psi? on stock engine?

thanks

Scott,

We are confused now! what is basic boost for the kit? 5 or 7psi?

What is the next level for the kit? 8 , 10 of 12psi? on stock engine?

thanks

Boost can vary depending on the list of mods and the weather

we advertise a 6 psi kit

we have and will offer a slightly higher boost level with additional upgrades.


Scott

Can the basic kit be run safely on a bone stock engine? Which engine upgrades will make it safer to up the boost on the 6.1L?

Yes,
The 6lb kit on the 6.1 will have great durability and be a nice daily driver



Scott

Please post the quarter mile times for this Jeep!

We wont have 1/4 mile times till California speedway re-opens up on 10/28

The est 1/4 mile times low 12's @115-117


Scott

How can we get high 11s?

What about the transmission? any upgrade required? Diff?