Exhaust Help from the community please!
- Thread starter Jpb2006
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Sonic04GT
Member
Welcome!
If you live somewhere that doesn't require emissions testing, get the O/R pipe. Living in FL, I have never ran a mid-pipe with cats.
I have a 2004 GT also, and I love the sound of the standard Magnaflow mufflers (NOT Magnapacks).
My car came with a Magnaflow Catted X and Magnaflow catback. It had a really good deep tone to it but I soon swapped to a Magnaflow O/R X.
Here is a video of the stock exhaust manifolds, Magnaflow Offroad X and Magnaflow catback.
YouTube - 2004 Mustang GT Magnaflow Exhaust‏
Here is the car now with BBK Longtube headers, BBK shorty offroad H-pipe, and the same Magnaflow catback
YouTube - 2004 Mustang GT Dyno Tuning‏
YouTube - 2004 Mustang GT Burnout‏
Personally, I like the sound of the H better. Little less rasp and has more a muscle car low rumble to it.
If you live somewhere that doesn't require emissions testing, get the O/R pipe. Living in FL, I have never ran a mid-pipe with cats.
I have a 2004 GT also, and I love the sound of the standard Magnaflow mufflers (NOT Magnapacks).
My car came with a Magnaflow Catted X and Magnaflow catback. It had a really good deep tone to it but I soon swapped to a Magnaflow O/R X.
Here is a video of the stock exhaust manifolds, Magnaflow Offroad X and Magnaflow catback.
YouTube - 2004 Mustang GT Magnaflow Exhaust‏
Here is the car now with BBK Longtube headers, BBK shorty offroad H-pipe, and the same Magnaflow catback
YouTube - 2004 Mustang GT Dyno Tuning‏
YouTube - 2004 Mustang GT Burnout‏
Personally, I like the sound of the H better. Little less rasp and has more a muscle car low rumble to it.
PAN1K
Member
I def agree that you should go O/R x-pipe if you can. I have an O/R x-pipe with flowmaster mufflers and it sounds amazing!
Check it out before and after: YouTube - Before & After X-Pipe '99 Mustang GT‏
Check it out before and after: YouTube - Before & After X-Pipe '99 Mustang GT‏
Sonic04GT
Member
That's weird. My buddy's 2001 with Flowmasters only was much louder than that.
No offense but I had Flowmasters on my '95 and I haven't liked them since. I got sick of the hollow tin sound they made.
marine_2003
Member
Right now I have BBK tuned length shorties, the BBK high-flow catted x-pipe and the Magnaflow Magna Packs on my 2004 GT and it sounds great. I am looking at going to the Magnaflow O/R pipe hoping for a deeper sound. Will they not pass you on emissions because of not having cats? I have seen some people lose their cats, get a tuner and pass emissions. Guess it depends on your state.
BULLITT5228
Member
How do you bypass the o2 sensors with an o/r h or x pipe? Wouldn't that cause the computer to dump fuel?
Sonic04GT
Member
Those are your upstream O2 sensors. You bypass the downstream sensors with an O/R pipe which essentially just measure the catalytic converters' efficiency. Since the cats don't exist, these sensors will throw a code saying the cats are below threshold. Simple fix is to just have a tuner shut them off, or you can get MIL eliminators to stop it from triggering a Check Engine Light.
Jpb - Sorry, don't know anything about high flow cats. Probably going to be your only option though unless you want to swap midpipes during emissions time, or find some kind of work-around depending on your state's testing methods. You will notice a difference in sound. In all honesty, I think I liked the tone better when I had my catted Magnaflow X as opposed to the Offroad X. Offroad was louder and still sounded really good, but the catted X had a deeper grumble to it and wasn't as raspy. With a bolt-on 2v, difference in power will probably be minimal.
PAN1K
Member
Maybe the camera just didn't capture the sound well. When I got the car it had Flowmasters only and was decently loud. With the O/R x-pipe it is significantly louder. A short trip down the interstate makes that painfully obvious...
I'm an obvious fan of MAC products. I had an MAC O/R H-pipe with an MAC Flowpath catback (with stock manifolds) and it sounded a lot like this:
YouTube - 2002 Mustang GT MAC exhaust‏
Here's a similar setup but with the MAC Prochamber (lowpath catback & stock manifolds)
YouTube - 2004 Mustang GT - MAC ProChamber + MAC Catback‏
Here's the Prochamber with a Flowmaster catback:
YouTube - MAC Prochamber Flowmaster 40 series‏
YouTube - 2002 Mustang GT MAC exhaust‏
Here's a similar setup but with the MAC Prochamber (lowpath catback & stock manifolds)
YouTube - 2004 Mustang GT - MAC ProChamber + MAC Catback‏
Here's the Prochamber with a Flowmaster catback:
YouTube - MAC Prochamber Flowmaster 40 series‏
Sonic04GT
Member
First one sounds good. Not a fan of the tin can sound in the second vid. Surprisingly the 3rd isn't bad, being that I don't like Flowmasters.
Sonic04GT
Member
600hpSnake
New Member
Personally I am a Flowmaster guy. But the old school 2 chambers, not the Delta Flow or Hush Power. They make the American Thunder that sounds good in the 2 chamber also. (Wife has them on Her 11' 5.0) But I really do love the sound of Stainless Works. They are high$$$$$ though. Here is a clip of the Stainless Works. 2011 Mustang 5.0 Stainless Works Catback vs. Stock‏ - YouTube My Cobra currently has Magna Flows and I think they sound like crap at an idle but I have to admit they sound good when you get into it.
Anyway: Long Tubes / H-pipe (High Flow Cats) / 2 chamber Flowmasters
Anyway: Long Tubes / H-pipe (High Flow Cats) / 2 chamber Flowmasters
I really appreciate the sound of an h-pipe and prochamber, but when i got my setup i fell into an o/r bassani x pipe. all I have is weld in flowmaster 40s, but I think it sounds like sex! nice and grumbly around town but tyou get on it, you sounds like a nascar. I like to scare people on the side of the road with it! : )
I think that the magnaflow exhaust sounds pretty good, but I had a girlfriend who's mom had a bassani o/r x and cat back and I have got to say, hands down the best sound I've ever heard out of a mustang, and I've heard ALOT of mustangs.
I think that the magnaflow exhaust sounds pretty good, but I had a girlfriend who's mom had a bassani o/r x and cat back and I have got to say, hands down the best sound I've ever heard out of a mustang, and I've heard ALOT of mustangs.
