I am thinking of purchasing the GM header and the xtc downpipe with highflow cat for the car i am just wondering if anyone knows what this will do performance wise. I know it will help but i am just wondering if anyone has any specifics. also am wondering if the sound of the car will change that much i have a corsa axel back on.

 

cti is the way to go

 

zzp header and dp combo is good, I have it and llove it. pretty much get anything asside from the gm ported manifold... it's not worth the money...

 

I have a ported stock manifold and the XTC catless DP, sounds great. Where are you in SFL?

 

I live in stuart.

 

How far do you plan on taking the car?

 

Ehh, thats kinda far then, I'm in north Miami. Ever come down this way, let me know. I can also set you up with a ported stock header for much cheaper than the GMPP unit.

 

Not really sure just trying to do as much as i can without voiding the warrenty.

 

I would recomend the ZZP midlength header/dp combo. But stick with 2.5 unless you want lots of noice, lol.

 

I hear the XTC cats clog after a short time...

 

I have the 3" and it's not bad on noise a tiny bit louder then stock.. but then again i kept the cat

http://s200.photobucket.com/albums/aa204/unknowngod430/

that has some vids of my car with the zzp header/dp combo.. 1.75 primaries and the 3" dp with 2.5 " bolt in as well as the high flow cat.. and there are two on there from me completely stock as well (the 0-55 and 0-60) ones i don't think it sounds much different then stock

 

i owned the gmpp header and i wasn't satisfied with it. its pretty heavy and slightly less restictive than the stock. i heard the ca one is good and i think thats what i'm gonna put on the ss/tc

 

I just put on a vibrant header and dp and absolutely love it, I couldn't believe the difference driving the car. I was skeptical before but damn. This thing is awesome and pretty easy to install too.

 

vibrant header donwnipe

 

?? you're not going to be able to use a header on the ss/tc unless you modify it to accept a turbo and maybe a wastegate setup not to mention clearance..

IMO midlength on this car is awesome

 

That's definitely less noisy then mine....
http://www.youtube.com/watch?v=yi8VjKwZhzo
I only have the one video from the outside currently. ZZP 1.75" primaries header, 3" downpipe with Stock cat-back.

 

you have an intake.. thats why least thats the only difference really well that and i have a 2.4 so mines going to sound mellower and deeper

 

i have gained 14whp and 14wtq with vibrant header downpipe