Thread: exhaust

just replace the mufflers. the stock catback is good for 350 whp without being restrictive.

i like my stock mufflers, but i am coming from flowmasters...or dronemasters...or raspmasters.


i think borla sound the best, but id much rather hear no exhaust noise and just whine. sleeper until i get into the throttle, then they know what's up.

I have SLP catback. I like it, just letting you know if i could do it again, i would just have gotten headers instead of spending the money on the catback.

maybe this will help with your decision. click below, this is my car with slp catback and zzp downpipe w/ cat.

http://videos.streetfire.net/video/M...-GT_196475.htm

they should, only reason i said i would have done it differently is because im getting a top swap. If you go the header route you would need smaller primaries due to being a N/A car. Your car would drive differently, it would feel like a dog up until WOT. Best money spent if your staying N.A would be a Plog from zzp, and If you like the SLP's they're a straight foward install and your better off getting them from here: INTENSE-Racing.com: SLP "PowerFlo" Stainless Steel Exhaust System, 1997-2007 Grand Prix

p.s a pcm flash would wake up your car alot.

wow and i was thinking of buying those slp's from pyfc.com, you saved me $50 lol thanks, btw what was the shippin on it?

real simple rules of exhaust on our cars (especially on NA cars):
1. remove U-bend
2. change mufflers if you want gruff--flowmasters though they will drone. borla and magnaflow mufflers are prestine choice. i know personally i went from flowmasters to borlas and actually gained 10 at the wheels but i also at the time had a major na build. its really up to you but no need like mentioned prior to go big in diameter till ~350WHP. any exhaust shop worth their weight in salt can make a nice exhaust for a fraction of the price of a bolt in kit. just not worth it.

that is about it.

For now just some basic supporting mods and then some

-Wizard cold air intake w. Aem dry flow filter
-180* T-stat
-zzp downpipe w. magnaflow cat
-overkill pcm flash
-intense shift kit
-intense poly motor mounts
-ssc lowering springs, kyb Gr2 struts, zzp ceramic coated Plog (not installed yet)
-F-body calipers in front w. power slot rotors front and rear
-HID headlight bulbs, blazertech fog lights
-oil pressure, a.f gauge, and aeroforce interceptor gauge to scan for KR

Originally Posted by 99prixgt

If you go the header route you would need smaller primaries due to being a N/A car. Your car would drive differently, it would feel like a dog up until WOT.

not true. a GT will take to headers too.

Originally Posted by Bio248

not true. a GT will take to headers too.

yeah but there is such a thing as scavenging. Primarie size does come into play for optimizing the performance. if it didnt then everyone would run big dogs with 6 inch exhaust.

i realize that, but you cant just say that the car wont make more power with headers because it will. i just think that these motors make such an excessive amount of torque that everyone can stand to lose a little bit of it down low.

What i meant was, is that being mostly stock N.A you wouldnt want to put 1- 3/4" primaries on it.