That shit is for tree huggers.

lol, i hope this dosent turn into the "back pressure" debate

that shit is stupid

All the back pressure you need right here.




Edit -- I think motor trend just released a video with 2.5" and 3" collectors for a comparison? Can't remember.

This post was edited by jimmyhoud on Sep 12 2016 11:35am

rainwater smooths out backpressure and makes the exhaust sound better imo.

engine masters, part of the motor trend channel on you tube did 2 different tests

1 with bashing headers in your classic make them fit style and then went full retard on smashing them, and it made no real difference and then people complained that they were using headers that were too big in the first place so they did more tests with the same motor and showed that really didnt make a big difference either.

i have personal experience with smashed/dented headers on the race cars from contact, and as long as they arnt pinched off it dosent make much difference in my ass dyno

This shit isn't for your daily driven Honda Bubba.

tbh there is no situation in which i don't find exhaust coming through your hood a laughable choice.

guess some guys like to roll coal on themselves though.