Guys, i have had the midpipe on for like a week and a half now and i love the sound in the 2K RPMs but its even sweeter in the 4K~RPMs. There is a way nicer sound in the mid-upper RPMs. Anyways, my already crappy gas mileage has gotten even worse with the new midpipe on, than before I had it on. So what I'm trying to say is that: does the midpipe cause worse gas mileage contrary to my beliefs? I thought that maybe since it is less restrictive, I would actually maybe have even a tiny bit better gas mileage than w/o the middy. Maybe I am just driving at higher RPMs do to my new excitement with this and as a result, I have worse gas mileage. Please, anyone, your thoughts?

 

its just that u are stepping it harder to hear more of the new exhaust sound

 

Your crappy gas mileage is probably due to your right foot which has gotten heavier since you installed your midpipe.

This is a common problem usually associated with aftermarket intakes and exhaust systems. The ear enjoys the new sounds which causes the brain to tell the foot to press harder on the accelerator.