Ok guys I've got a couple exhaust leaks so its getting to the point where I need to replace it. I'm planning on going s/c in the spring and I think I've made up my mind on a gmpp exhaust. The only one I've been able to find is the exhaust with 2.25" piping from ced. Would this one be alright?

 

That's the only one gmpp makes

 

IMO get the magnaflow 2.5" system, Sounds very close to the same, yet it is a much larger pipe size for extra flow.

 

Well, GMPP used to make 2: Performance and Touring. I think they only make the Performance now.

 

Either way both were 2.25 in. Think it was just a different muffler they used but piping was the same.

 

I've been thinking about the magnaflow too, but would I be ok with a 2.25"?

 

sure, the 2.25" is same as the stock catback but 2.5" would be better for you

 

Just don't know what I can pass inspection with here in mass. At least with the gmpp I can say its a GM part. Not really aftermarket lol

 

Catback won't make you fail inspection. Only a changing the downpipe can have that effect. Catback could just get you a loud exhaust ticket, depending on which one you get and how nice the cops around you are

 

I have the gmpp touring and like how it sounds. The gains i got where over 12whp with the cat back and gmpp intake

 

it will in MA Bluebalt07

it is illegal in MA to alter your exhaust in any way from the factory that will increase noise, hence why i went from a Megan to my GMPP. atleast its a dealer installed part so it should get tossed in court if I ever have an issue, that was my thinking anyway

General Laws: CHAPTER 90, Section 16

"No person shall use a muffler cut-out or by-pass. No person shall operate a motor vehicle on any way which motor vehicle is equipped (1) with a muffler from which the baffle plates, screens or other original internal parts have been removed and not replaced; or (2) with an exhaust system which has been modified in a manner which will amplify or increase the noise emitted by the exhaust."

 

That's pretty much what I'm thinking now lol

 

I also have both of these. Did you dyno it to get those numbers?



The GMPP is a good quality nice sounding set up. I really like it.

 

Yeah i dynoed it when i first bought the car and then after i put the cat back and intake. I love how it sounds. People ask all the time what exhaust is on it all the time and say how nice it sounds inside the car and outside it.

 

Ok lol just don't want to spend the money on a gmpp then find out I have to upgrade it once I s/c my car

 

i had a gmpp on my ss/sc stage 2 with no problems. Sounds amazing!

 

Awesome I've been listening to different clips and I love the sound haha

 

I have a gmpp performance exhaust new in the box even have the gmpp chrome tip ..I paid $750 for it and never used it...I would give someone a heck of a deal on it especially if you could pick it up...

 

Sorry I'd do $450 or best on the new in box GMPP performance exhaust woth chrome GMPP tip the tip alone was like $70