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10-22-2008
Just purchased a 2.5" downpipe w/ cat from zzp. Would flowmaster 40's make a bit of a difference in hp and sound or should i just stick w/ stock. Also, do you think the stock exhaust piping makes a difference as compared to new stainless pipe? Im planning on getting Mufflers now but only if its worth it. Any comments would help. Thanks guys.
10-22-2008
keep the stock mufflers, flowmasters sound like crap
10-22-2008
the 40's don't sound too bad to me... as for performance I don;t know how much difference they'd make... I'm doing a cutout
10-23-2008
Moved this to the tech lounge. Not know which engine you have I wasnt sure what engine section to put it in.
10-23-2008
I remember reading somewhere, not sure....but I know for a fact that 2 people tested flowmasters vs stock on a dyno, and actually lost around 8 hp.
Apparently, they're not a good performance application on our cars.
10-23-2008
For our cars, you can't beat the sound of Hooker Aero chambers. I'm not sure about performance.
10-23-2008
Ive tested a few aftermarkets on the 3800...I think they all sound like crap. These cars just dont have a good soundStick with stock
10-23-2008
Stay Stock!!!
10-23-2008
stock mufflers flow quite well. its kinda hard to find a muffler comparable to it....
I'd stick to stock. plus they sound nice
10-25-2008
+1!Originally Posted by _nick_
Ive tested a few aftermarkets on the 3800...I think they all sound like crap. These cars just dont have a good sound
10-28-2008
Stay with stockers for as long as you can.
10-28-2008
Your better off getting a full catback. Changing mufflers wont really help any. Im happy with my SLP.
10-28-2008
i run 3in racing pipe from the header back to flowmaster 40's. I like the sound quality. i would suggest that you keep your resonator in because that will keep the rasp to a minimal. I as well am putting a cut out in.
10-28-2008
SLP's sound really good as long as you leave the cat and res. in.
I got Flowmaster 40's and they sound pretty awesome IMO
YouTube - GTP Exhaust
10-29-2008
they do sound good. considering you have the resonator in like i said.
10-30-2008
Thanks for all the help guys. I'm not getting headers so im getting a zzp ported PLOG to go with my zzp downpipe w/ cat. Just want to free up some exhaust flow for later on when i have enough add ons to put a 3.4" pully on. Well here, I have: WixAired CAI w/ 9" K&N cone, Autolite Platinum 104's plugs, 2.5" ZZP downpipe w/ Magnaflow HF cat, 180* tstat, and my brother owned a HP TUNER so he is going to tune my car for me a.s.a.p. I dont want to be like some of the NOOBS out there that basicly toss a 3.4" pully on a stock friggen engine and chip a piston. I might even go with a 3.5 if i can find one that not outa stock. What do you guys think? GO with 3.4" now or 3.5; or go with either with some more mods?
10-30-2008
you should do the u bend delete as well
you should be able to handle a 3.4... but I don't have any experience with it so I'm just going by other peoples comments
10-30-2008
The stockers are good up to 300 wheel horse then you have to change them.
10-30-2008
i totally disagree!i got a zzp 3 inDP with cat and flowmaster cat back with delta 40's with dual rolled tips,i get complimented all the time from random ppl about how good my car sounds.
Originally Posted by SuperSport
10-30-2008
i say 3" DP and take your mufflers out and replace them with regualr pipe and through some nice titps on it
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