Thread: gas mileage

Originally Posted by Juanmiguel

Mine went up on this last mod install, I did the SSIC, ported SC, TB and LIM at the same time and now it's 20-22 mpg city driving and 35+ highway with a very light foot. It was doing way worse before I installed those. I still haven't figured out why the MPG improved so much with those parts.

My non Intercooler 3.4 with headers got 28-30 highway. Port and polished supercharger and polished what I could easily reach in lim and got a constant 32-36 highway . . . Must be porting the blower that helps somehow

Originally Posted by fisher580

My non Intercooler 3.4 with headers got 28-30 highway. Port and polished supercharger and polished what I could easily reach in lim and got a constant 32-36 highway . . . Must be porting the blower that helps somehow

lol, porting a blower does nothing.

You probably fixed a vacuum leak.