justang05

Im about to re-do my exaust anyway so i think ill try out these valves! You could launch with them closed and open them up once you get out of the hole! But i wonder if i would still get a good gain since i am going with the MRT mufflers... guess its worth a try...

Furinox

You'll probably get more of a gain with these than u will the mrt's. When the cutout is open the air/pressure form the motor isnt even going to reach your mrt mufflers.