skinbrain

just wondering what kind of gas mileage you guys get with basic bolt ons, i have longtubes 3inch ypipe high flow cats flowmaster catback(for now) lid and 85mm mass air, car has been tuned on a dyno and made 336 rwhp 345 rwtq, but i only get about 15-20 miles a gallon, on the highway it seems about the same. i only drive my car about 7000-10,000 miles a year so it sits in the garage alot. could it be front 02 sensors bad, rears are tuned out, or plugs, clogged cats? my car isn't doesn't have a ses light on or a check engine light on. am i just worrying, or should gas mileage be better? car runs fine and has plenty of power, any help is greatly apprieciated. thanks

SmokingWS6

iTrader: (1)

I get that milage but i'm a stalled auto. Gas milage is a very touchy topic as many factors contribute to milage. You'll get responses ranging from 12mpg to 25-35 but it all depends on driving style. I can vary my milage by over 10mpg per tank depending on how I drive.

Drive like a grandma for a tank. If it still struggles to achieve 20mpg perhaps you have a sensor or tuning related problem.

skinbrain

thanks for the reply, i'll definately give it a try.

ZoFastSS

iTrader: (5)

I'm at 23, seems like after putting in those Zex Nos plugs, and gapping at .038 I picked up a mile or two. Don't quote me on this I'm still watching it.