I was wondering if you knew the pipe sizes for the Borla, Stillen, and Injen pipes. I am going to be designing my own exhaust system and it would be great to know if i should go for 2.25", 2.5",2.75", or 3" pipes. Ive looked for the info but had some trouble. Thanks!

 

check Sport Z Magazine - Fall 2003 Issue

to view the exhausts and listen to soundfiles, you can try clicking here:

http://www.sportzmagazine.com/exhaust.html

 

Ive heard the soundfiles plenty of times. What im doing is creating a custom dual exhaust with 2 HKS carbon/Ti mufflers, and i think i might copy something the stillen piping, just trying to find which diameter piping they are using.

I am relatively sure i have redad the injen is either 2.25 or 2.5.

 

just found injen to be 2.25, same as stock. I wonder if 2.75" diameter would be too big?

 

Looks like borla is probably 2.25 also, But Stillen is what i really need, ill start a new thread

 

stillen is 2.25 too I beleive. and should be more than enough for the Z, 2.5 maybe for FI applications.

 

Hmmm, my injen for my g35 is 2.5", measured at the midpipe.

 

stillen is 2.5