So, i am in the process of parting out my extremely fast WRX and selling it to buy a 07 GC SRT8. To start, i am just gonna go ahead buy the Mopar exhaust and intake before hand, just cause I want that sound and the minimal performance increase. Couple of questions though.

1.) What are the other best bang for your buck performance (Power) mods you can do to the 6.1 in jeep. I worry about warranty, as this will be the first car I want to keep my warranty, but I understand the nthe normal bull crap that goes along w/ all mods. I think my dealer is pretty cool w/ mods, at least they are very cool about mopar ones.

2.) The brakes are awesome, but, i am the type of guy that wants better, I want to do better fluid and some braided stainless steel brake lines. You guys know if this is a common mod, or does anyone sell them?

3.) I am a sucker for red brembo's. Do the calipers swap from the charger and magnum to the cherokee? Do you know if anyone has done this? Know anyone that wants stealthy black calipers?

4.) Coming from suby community and know Fuel injection pretty well, I realize the importance of a good tune and that a good tune is the only way to get real gains from bolt ons. So, how tunes, what are the engine management options, and where do i find these parts including exhaust, EM, Intake, etc at the best prices.

I think that is all. And i hope to get to know you all better. I am big supporter of automotive forums and have built up a pretty big rep over at the subaru forums and cant wait to soak up all the knoledge you guys have and hopefully I can bring some contributions to the forum. Peace, and make sure to keep the shiney side up. Thanks again.

1You can do the Corsa/Mopar exhaust but to the Volant CAI, Has the best reviews on here. Plus with a few extra bucks at Home depot you can make it a ram air with your lower brake scoop.

Otherwise B&G flash till they come out with a programmer for it. and thats about it depending on your dealers anal retentiveness with Mods.




2 I ave not seen Steel brake lines yet, but i am sure you can get them, Either a kit or have them made yourself. If youfind them let me know i want some also.



3 I am almost positive they are exactly the same. I also want to do this with future black with crome lip rims.



4 We are currently limited to B&G Flash, No tuners yet, but SCT and DiabloSport are working on it. Most of your parts can be purchased through SoutherHotRod.com EDWIN is a great guy to deal with. But there are other on this site also.

Thanks. I appreciate the info. Just gotta continue the partout, sell the rex and I will have my GC SRT8.

You will enjoy the Torque compared to your scooby.

If you are really into it and find out your dealer will work with you on your mods your best bet is Dynamic Racing Heads, and a mild cam. This comb put a 75HP increase on the dyno. Keep in mind this was on a all factory exhaust.Put on some headers and a catback you could approach 100HP.

The most recent Jeep with this combo just ran 12.2:D.

Good luck. Welcome and let us know what other info you need!

So how much increase do you see from the headers alone. I need to scope out my dealer to see how cool they will be, but most dealers will instantly void a warranty w/ new heads. I am hoping to just do bolt on's and consistently be in the 12's.

So how much increase do you see from the headers alone. I need to scope out my dealer to see how cool they will be, but most dealers will instantly void a warranty w/ new heads. I am hoping to just do bolt on's and consistently be in the 12's.

I have seen high to mid 12's on Headers w/Highflo cats, CAI, Catback, 170 thermostat and a tune. This setup should be very consistent. Drop in a 100 shot youwill see high 11's:eek:

Has anyone figured out the CEL issue w/ Headers? I hate CEL's. Is it an option to go catless? Probably not. We need to get on these vendors to do our CEL fixes. Or a nice plug and play programmer that can clear CEL's or remap w/o cats. I know this is only our sencond year w/ these vehicles, but we need some advances in electrical and mapping products. Oh, and what about a Posi rear. I am so surprised that we dont have a solution to that yet.

Has anyone figured out the CEL issue w/ Headers? I hate CEL's. Is it an option to go catless? Probably not. We need to get on these vendors to do our CEL fixes. Or a nice plug and play programmer that can clear CEL's or remap w/o cats. I know this is only our sencond year w/ these vehicles, but we need some advances in electrical and mapping products. Oh, and what about a Posi rear. I am so surprised that we dont have a solution to that yet.

The CEL can be cleared with the dash hawk. We will be waiting some more for the programmer. I believe you can use some bungs, I think three in a row have cured this issue for the LX guys(300,chargers,maggies). The problem is Mopar/DC they don't want us messing with it so they are going to great extents to lock us out.
The rear end is a Dana 44 I have been told two different stories. One says the jeep has very different internals then the normal Dana, Others have said its interchangeable with other Dana parts. I would love to know the true answer.

I have seen high to mid 12's on Headers w/Highflo cats, CAI, Catback, 170 thermostat and a tune. This setup should be very consistent. Drop in a 100 shot youwill see high 11's:eek:


I want to put that statement in perspective. Yes there are modified Jeeps running in the 12's. There are a few "stock" Jeeps running in the 12's as well since last year. It is a fact that not all tracks are created equal. So with that said, a Jeep owner in one part of the country (or Canada) is not necessarily and most cases wont see those times, and will require a DA meter to at least have an idea how one would fair at the faster running tracks.

The CEL can be cleared with the dash hawk. We will be waiting some more for the programmer. I believe you can use some bungs, I think three in a row have cured this issue for the LX guys(300,chargers,maggies). The problem is Mopar/DC they don't want us messing with it so they are going to great extents to lock us out.


The CEL can be cleared with the DashHawk or any hand held scanner such as an inexpensive Actron. Last year there were many attempts by members at the OC (BevsJeep/Hows2nd/Inferno/myself) to space the 02sensor 7 ways to Sunday....make MIL.....try different heated 02 sensors...etc...etc. The attempts at a Mil or CEL eliminator all have failed due to the ECU program. Until the code can be read and the secondary 02 sensor programmed out we are stuck with the light....which has been on in my truck for 8,000 miles with no effect. Buy a Dash Hawk or hand held and clear it ever so often.

FWIW, I'm going to be testing Stainless Works MIL elims (inline resistors) with their full exhaust when I get mine back next week. So far they haven't thrown a CEL in other test vehicles.

FWIW, I'm going to be testing Stainless Works MIL elims (inline resistors) with their full exhaust when I get mine back next week. So far they haven't thrown a CEL in other test vehicles.


Let me know in they work!! or the cluster is going to come out and the light willbe removed or taped up

Let me know in they work!! or the cluster is going to come out and the light willbe removed or taped up


LMAO. Will do.

Alright. Apparently headers and a catback is to loud to be professional. I need to know what of those two mods will net more Hp/tq gain. I am thinking headers. So if i do thermostat, fan mod, headers and a CAI i should be close to my consistent 12's. Then i just have to wait for a decent tuner.

Alright. Apparently headers and a catback is to loud to be professional. I need to know what of those two mods will net more Hp/tq gain. I am thinking headers. So if i do thermostat, fan mod, headers and a CAI i should be close to my consistent 12's. Then i just have to wait for a decent tuner.


The stock catback is pretty loud, most of the gain in loudness comes from the LTs at WOT. When cruising they're not any worse than stock (aftermarket headers/catback).

So where do you gain the most HP from, headers or catback?

So where do you gain the most HP from, headers or catback?


I'm not sure anyone's dyno'd just headers with stock catback yet. When talking with Stainless Works about the stock exhaust and how it would compare to theirs, they said headers alone would probably net 15-20whp.
You're honestly going to be better off getting a complete exhaust than just doing one or the other. For instance the SWorks LTs are 1 3/4" primaries to a 3" collector to 3" flow tubes 3" Metallic substrate cats and catback. The stock catback is 2 3/4" and has a few extra bends in it to make it unequal (eliminating some resonation) in length. Whatever gains the headers net will be that much more obvious with the freer flowing catback. I've seen a few guys dyno 8-12whp from a Corsa Catback and no headers, so there are some gains to be had there as well.

I was planning a corsa catback at first, but i talked to one member here that said the catback plus the headers was pretty loud, loud enough that he didnt want it anymore. I am going to have to have clients in my car, and I dont want them to think it is too loud or droning or annoying. It has to sound like stock at idle and cruising speeds. I dont care how loud it is at WOT. Maybe an option is to do headers, keep stock cat back and do cutouts at the end of the headers.

I was planning a corsa catback at first, but i talked to one member here that said the catback plus the headers was pretty loud, loud enough that he didnt want it anymore. I am going to have to have clients in my car, and I dont want them to think it is too loud or droning or annoying. It has to sound like stock at idle and cruising speeds. I dont care how loud it is at WOT. Maybe an option is to do headers, keep stock cat back and do cutouts at the end of the headers.

I'm going to post sound clips of the Stainless Works full exhaust as soon as I can after picking it up on Friday. I'll try to do some in cabin recordings at part throttle, and WOT as well.

Thanks, that would be very helpful, a written comparison to stock exhaust would be very helpful.

Thanks, that would be very helpful, a written comparison to stock exhaust would be very helpful.

I had them take notes on anything of interest pertaining to the design of the stock exhaust, and there will be quality before/after pics as well.

Man Stroke, you are on the ball. Very helpful. Thanks again.