maybe someone has a gxp.... if not im missing 2 exhaust manifolds
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03-01-2009
maybe someone has a gxp.... if not im missing 2 exhaust manifolds
03-01-2009
I think he meant aren't v8's.
03-02-2009
3" Catted DP with a stock catback -the res and it was barely louder than stock honestly. When I took off the cat, things changed for the worst but I soon fixed that.
I'm now on TOG headers, Full 3" exhaust (no cat, no res), 2-1/4" Y-pipe, Stock Mufflers. Not too raspy IMO. Its really not that loud either, louder than stock but not too loud at all. There is 0 drone on the highway in overdrive at any speed. I'm sure it flows more than i'll ever need it too.
I've been through several exhaust revisions, this is the best by far. I really believe the 3" piping helped out the overall sound IMO. And no, I didn't loose a bit of low end power.
03-02-2009
Wow, talk about your major brain fart. AREN'T V8s. Dang keyboardOriginally Posted by bluegtp91
Must've had a few too many that day...
03-02-2009
Ok so I did it. I jigged up the DP and cut out the cat thank God becaus it had two cracks in the welds and the flex pipe was busted. What better time to do this than now. It worked great and spaced the o2 sensor and it sounds great. However the code reappeared and I need to spoof the sensor. but I need help there now.
http://www.grandprixforums.net/f18/o...tml#post151563
03-02-2009
i dont have a resenator and i ahve the u-bend delete in my car and i dont know the difference because ihave not been in one with them in but i raced gtps before and beat them so im pretty sure it did a lil something but it sounds really good with both of those
03-03-2009
I dont wanna go off topic or anything here but is there any exaust system out there that will make these things sound deeper for not like your yelling into a pillow(muffled). I am considering a complete exaust replacement and removing the resonator would be one of the steps but I have heard that they make the V6 way too raspy.
Also there is a guy that replaced his exaust system without a Res and it sounds pretty nice.
YouTube - Grand Prix GTP Exhaust
03-03-2009
change the mufflers only. youll thank me later. either that or just switch out the resonator with a glasspack.
a catback will not do anything for performance though, so it is really a waste of money.
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