I just installed the GMPP sport exhaust and I have noticed a loss in power. I doesn't pull as hard as it used to. Theres more hesitation. Is this normal? Anyone else have this problem? Thanks in advance!

 

You shouldn't see a loss of power at all. That is strange.

 

something is definately wrong.
theres should be a small but definate INCREASE in butt dyno.

check for leaks?

 

Check to see if you installed it backwards

 

Maybe he lost a little low end torque with the exhaust.

 

i know this is for 2.0 s but i put a pacesetter on my 2.2 and before i ran consistent 15.6- 15.8
now, i cannot get below 16.1

 

def. check that baby for leakage!

 

not with an ss/sc and a gmpp catback.

 

I would look into the cat being clogged and possible exhaust leaks.

 

Yeah, i'm gonna check it for leaks. That's what I was thinking. Sometimes it pulls harder than others though.

 

driver error

 

Nope! I forgot to mention that I installed the driver mod 2.0 before the exhaust.

The cat cant be clogged because I just installed it.

 

I just installed my GMPP performance exhaust today also and i noticed the same thing, along with a clunking from the front end when i leave a stop and am turning. I kind-of figured there would be a little loss or low end torque because of less restriction but its a little more than i figured.

 

Where did you purchase your exhaust? Maybe we got a bad batch.

 

I had a loss of low end torque when I installed my header back exhaust but thats because I have 3inch exhaust. I don't see there being a noticable loss with the GMPP exhaust.

 

The only thing that I can think of is a leak.

 

if you replaced teh catback then you didnt replace the cat and the cat can deff. be clogged

 

Well, I noticed it right after I installed the exhaust. So I doubt that the cat could have got clogged the same time I installed the exhaust.

Oh btw, your avatar is hilarious. Where did you get it?

 

u might just feel it now cause you were now trying to notice a difference

 

I only have 13000 miles on my car. It shouldn't be clogged already.

 

i would check for leaks first then if none then take it to the dealer and have them check your cat

 

Yeah or I might go with the zzp downpipe with cat.

BTW, your avatar is hilarious. Where did you get it?

 

from some forum. thought it was funny so i put it there. lol

 

Just to say, people have had their cat get clogged with far less than 13000 miles on the car. The SS/SC runs pig rich, which kills cats pretty damn quick.

 

I actually got it from a friend of mine. He had it for like 5 months or so. And my car has 3,000 miles on it so i doubt the cat is clogged. I'm gonna put it up in the air at work and check for leaks. We checked before we put the car on the ground but i suppose something could have loosened up just enough while driving.