MP Cobalt

iTrader: (4)

Then id go with the 2.5 exhaust.

chevysssc

iTrader: (2)

by the way nothing will void warranty unless it causes the failure of something. (magsun moss warranty act)

ikeryder13

iTrader: (2)

so no ark?

u mean the gmpp?

MP Cobalt

iTrader: (4)

Well what size is the ark exhaust you want?

chevysssc

iTrader: (2)

2.5 is plenty just make sure it is a true straight through muffler and u will be happy

ikeryder13

iTrader: (2)

2.5" exhaust

chevysssc

iTrader: (2)

look it up, u can do any mod and it is not legal for gm to void ur warranty unless that mod caused the damage

u can do what ever u want and a exhst will never hurt anything so u can pick any exhst u want and u wont void anything,

ikeryder13

iTrader: (2)

oh ok i see... well i could just replace with the stock again before i take it in if anything happens

CobaltSS 16

iTrader: (3)

Get a 2.5" exhaust. Magnaflow or Corsa. Ark is a good choice too (pretty loud though and the tip is huge and angled)

ikeryder13

iTrader: (2)

is it deep sounding atleast?

chevysssc

iTrader: (2)

u dont have to replace it ever, it wont hurt or effect anything with your car, a cat-back is the safest thing u can do to a car, the only time they will care is only if ur down pipe or cat takes a **** ,then they will do a flow test to test for restriction and find out that your cat back is more free flowing than stock so u will be safe the only time u must worry is when ur exhst is not free flowing over stock

magnaflow is deep

magnaflow is also very free flowing i believe they show gain of 7hp on there 2.25 on a stock cobalt ss/sc so 2.5 will show even more and will also help out ur intake

ikeryder13

iTrader: (2)

ark shows about 10-13 hp gain

2fastSS

im gonna go with the dt-s also looks and sounds good

neb07ss/sc

i have the ark dt-s and it sounds AMAZING!! i'd def go with that if you have a ss/sc

2fastSS

there are two different exhausts for ark the dt-s and then there is the angled tip i forgot the name the angled tip is loud and obnoxious and the dt-s is straight tip free flowing sounds great... I used to have the corsa exhaust was an amazing exhaust just needed money at the time, this time around im going for the dt-s ark exhaust which is 2.5 straight through

the stock piping tapers off to 2.25 after the axle where as you could just cut that and get piping for 2.5 to mate up to the rest of the exhaust... The Gmpp is a good exhaust for a stock car or even a stage 2 car... But thats it,

ikeryder13

iTrader: (2)

yeah the dt-s is what i wanna get really

SI FTL

So, what your saying is i can run nitrous express and it's not going to void warranty unless i blow the mother 7*^%( up? I know a few dealers are complete co(k suckers and have even heard on here about dealers voiding warrantys because of aftermarket wheels

ikeryder13

iTrader: (2)

thats because no one goes after the dealer after that legally

ikeryder13

iTrader: (2)

but i wanna know about the best exhaust from a hp aspect... what makes the best hp?

scott allen

i got the gmpp sport kit yes it seems a little smaller but flows alot more i read one thread were a guy went to the dyno before and after he picked up 12 hp and 10 lbs of torque thats also what gm said it would do as for size i would stay with 2 1/4 for clearnce issues even with the stock size the gas tank is to close if you look you will notis the brake lines are plastic and are very close to the stock crap also i think any bigger you could melt the brake line and the gas tank all the kits ive seen dont have the heat shile weled to them like the stock crap does in those close areas plus the gm kit wont void your warrenty the bigger kits could because they ara so close to the brake line and gas tank the gm kit souns really great oh the hp and torque is at the wheels if i missed spelled anything my bad very long day at work i hope this helps

djblass

been dying to get an exhaust from ARK but their prices are way to high especially the N2 price its ridiculous, for that price get the hahn exhaust.

ikeryder13

iTrader: (2)

that was my philosophy, but u pay for what u get

Stouffer

FYI the gmpp exhaust is made by Borla. I have the Vibrant header/downpipe combo with the GMPP sport and it sounds and feels good. I had the GMPP manifold, zzp downpipe with the gmpp sport but the new set up is much better.