05 -07 GT Exhaust Systems
03-27-2006, 07:21 PM
#32
1st Gear Member
Join Date: Oct 2005
Location: New Jersey
Posts: 131
RE: 05/06 GT Exhaust Systems
creamyam, the 05/06 Mustang has a great factory designed exhaust system and it's tough to improve upon, at least in the Dollar to H.P department. Unless you are going for BIG H.P. numbers, lets say more than 500. I think MM&F just did an exhaust shoot out between the top aftermarket header guys. They ran stock cat pipes to a Bassani X pipe and the JBA shorty headers seem to have made the best power improvement, can't remember what axle backs they used but they kept everything the same, except headers. I also remember reading a post somewhere where a guy tried various combinations of header, x-pipe,h-pipe and axle backs and the best power combo used the stock mufflers, he commented in the final configuration he had for best power, it seemed the engine "liked a little back pressure". The longtube headers seem to make the most power improvement, however if you are concerned with emmisions compliance, then this wont work becuse the long tubes wont work with the factory cat pipes. Yes you can run high flow cats with them which requires a full exhaust system re-work. Most guys, I believe, like the axle backs mostly to dial in the sound they prefer. Axle backs alone for the most part wont add much if any, and may actually drop a little H.P. But if you get the sound you're looking for there's not much concern for the minimal power loss. They're easy to install, the tips look cool and if you get the sound you want, you get the bang for your buck.
03-27-2006, 11:33 PM
#34
5th Gear Member
Join Date: Mar 2006
Location: Nor Cal
Posts: 2,179
RE: 05/06 GT Exhaust Systems
That would of course depend on where you are as far as Emision go. If you are in California. Then you cannot touch the cats at all. And technically you can't touch them in other states either as it is fedral law. Not until 80k at least.
Therfore the only other parts you would really want to replace would be the manifolds with headers I highly recomend JBA Headers. From what i have seen and heard no reason to replace the axle forward pipes as they are all mandrel bent 2.5" pipe. That leaves you with a X or H pipe and the mufflers Axle back.
Richard
Therfore the only other parts you would really want to replace would be the manifolds with headers I highly recomend JBA Headers. From what i have seen and heard no reason to replace the axle forward pipes as they are all mandrel bent 2.5" pipe. That leaves you with a X or H pipe and the mufflers Axle back.
Richard
03-27-2006, 11:53 PM
#35
2nd Gear Member
Join Date: Feb 2006
Location:
Posts: 227
RE: 05/06 GT Exhaust Systems
To rerplace the header pipe with long tubes, you have to relocate the catalytic converters. The factory setup puts the catalytic converter at the base of the short exhaust manifold on the downswing pipe, just past the factory collector. If you put in long tubes, they are going to run beyond where the cats are currently located, so even if you leave the factory cats, you are going to have to move them back (toward the rear of the car) in the piping. It is my understanding that this could be illegal, but will the car still pass a smog test? Here in NC they are just starting that, and it is county by county, but I live in a county that tests. Is there a way to put on Longtubes, high flow cats, and x pipes that will still pass a smog test?
04-03-2006, 01:25 AM
#36
Join Date: Feb 2006
Location: Lake Mary, Florida
Posts: 32
RE: 05/06 GT Exhaust Systems
As far as my baby goes, im all about GO! if its not the best performance part its not going on my car... so after doing some digging i found some of the best systems available for the 05-06 gt. JBA makes longtubes, h-pipe, and axle back out of 3" tubing, good sound and great performance. also a small company called (Stainless works) has a similar system with larger pipes off of the block into the 3" collecter. they also have a cat back system so you get 3" tubing all around.
but if you really want some go and want to intimidate all those ricer punks then spend the money with the best pair of longtubes and use some 4" cutouts by quicktime performance. a muffler shop should be able to do all the work even though there is a little bit of cutting and welding but it will b disgusting.
but if you really want some go and want to intimidate all those ricer punks then spend the money with the best pair of longtubes and use some 4" cutouts by quicktime performance. a muffler shop should be able to do all the work even though there is a little bit of cutting and welding but it will b disgusting.
04-03-2006, 03:02 PM
#37
Join Date: Feb 2006
Location:
Posts: 19
RE: 05/06 GT Exhaust Systems
ORIGINAL: Rench
creamyam, the 05/06 Mustang has a great factory designed exhaust system and it's tough to improve upon, at least in the Dollar to H.P department. Unless you are going for BIG H.P. numbers, lets say more than 500. I think MM&F just did an exhaust shoot out between the top aftermarket header guys. They ran stock cat pipes to a Bassani X pipe and the JBA shorty headers seem to have made the best power improvement, can't remember what axle backs they used but they kept everything the same, except headers. I also remember reading a post somewhere where a guy tried various combinations of header, x-pipe,h-pipe and axle backs and the best power combo used the stock mufflers, he commented in the final configuration he had for best power, it seemed the engine "liked a little back pressure". The longtube headers seem to make the most power improvement, however if you are concerned with emmisions compliance, then this wont work becuse the long tubes wont work with the factory cat pipes. Yes you can run high flow cats with them which requires a full exhaust system re-work. Most guys, I believe, like the axle backs mostly to dial in the sound they prefer. Axle backs alone for the most part wont add much if any, and may actually drop a little H.P. But if you get the sound you're looking for there's not much concern for the minimal power loss. They're easy to install, the tips look cool and if you get the sound you want, you get the bang for your buck.
creamyam, the 05/06 Mustang has a great factory designed exhaust system and it's tough to improve upon, at least in the Dollar to H.P department. Unless you are going for BIG H.P. numbers, lets say more than 500. I think MM&F just did an exhaust shoot out between the top aftermarket header guys. They ran stock cat pipes to a Bassani X pipe and the JBA shorty headers seem to have made the best power improvement, can't remember what axle backs they used but they kept everything the same, except headers. I also remember reading a post somewhere where a guy tried various combinations of header, x-pipe,h-pipe and axle backs and the best power combo used the stock mufflers, he commented in the final configuration he had for best power, it seemed the engine "liked a little back pressure". The longtube headers seem to make the most power improvement, however if you are concerned with emmisions compliance, then this wont work becuse the long tubes wont work with the factory cat pipes. Yes you can run high flow cats with them which requires a full exhaust system re-work. Most guys, I believe, like the axle backs mostly to dial in the sound they prefer. Axle backs alone for the most part wont add much if any, and may actually drop a little H.P. But if you get the sound you're looking for there's not much concern for the minimal power loss. They're easy to install, the tips look cool and if you get the sound you want, you get the bang for your buck.
04-08-2006, 09:26 PM
#39
RE: 05/06 GT Exhaust Systems
i have dynatech long tube headers with there x pipe with high flow cat and flowmasters and i could be any happier with the way it sounds.. i tis alot louder kno wthen it was when i just had the flowmaster and at ideal it is only alittle lounder but after 3000 rpm it sound awsome..
