MADBADGER

Does installing a testpipe increase or decrease gas mileage? i've heard it decreases because it causes the extra fuel to be thrown into the engine but it also allows for better flow freeing up power sooo... anyone have any insights? thanks

s2k dre

more flow might lean out a little, thats why u gain a little power. and i been running a test pipe for 40k miles and i still get over 300 miles on a tank.

S~Factor

^ same here. If there is a difference its minimal.

stevoe88

You must drive like my mother.

2poor2mod

300 miles to the tank, either granny driving or a lot of highway miles

chuhsi

when I had a berk test pipe, my mileage didn't change.

HMFIC

didnt change mine, but damn.. black dust everywhere and smelly.

s2kforlife

mine went down, i have a tp and invidia, so that might of leaned it out a lot i don't know, but it went down noticeably. Or maybe because i can't keep out of vtec i dont know.

rugsr

300+ miles per tank...how so, I get 240 to the tank and thats shifting at 4k

you will see more black smoke and the rear of the car gets dirty as hell. I hat eit but it pays to play