A testpipe offers a true 10-15 horse power.

Borla full cat-back claims like 15 or something, but prolly gives something more like 5-8hp

Now if you already have the Borla exhaust system, and add the test pipe I'm assumining its near 20hp total.... Don't think already having an aftermarket Exhaust system lessens what a testpipe adds

Hope that helps

 

Hey Deek where in colo do you live. A bunch of counties just got rid of their emmisions tests on jan 1st. I live in fort collins and larimer got rid of theirs so I get a test pipe. Look into your county rules.

 

The added torque throughout the power band is the main gain with the test pipe. There is a 30-40 ft lb gain around 3500 rpms and spooling up and hitting full boost happens so effortlessly.... And the NOISE! Yum.

 

i live in westminster so i dont even know

 

hey onepoint8tee have you put a testpipe and downpipe on your car?

 

I think it still applies in metro denver.

 

what would the gains be on a v6 ?

 

yeah im pretty sure that the v6 isnt turbo charged, so it wouldnt have a testpipe

 

yeah i think so to but dont worry about it bishop cause im still going to do both of those mods but have you put a new testpipe and downpipe in yours?

 

A testpipe isn't just for a turbocharged car. "Testpipe" is just the terminology used to describe a hollowpipe where the catalytic converter goes but is longer there because it is for "testing" purposes only. So it applies to naturally aspirated motors too.