hiltsy855

iTrader: (35)

EPS 226/230 - I get 25 or 26 highway, have not checked city or average. I'm still working on the tune (EFILive) but have made a lot of improvement. The exhaust used to smell awful but it's not too bad now. I have lean cruise activated and that helped highway mileage a little bit.

trans_am7935

iTrader: (15)

a typical heads and cam car will also get much better gas mileage then a cam only car, due to the less restrictive heads. also after you stall an A4...gas mileage usually hits the *******. it is all about driving habits and the tune plays a huge part in that

Mike Morris

iTrader: (55)

598/601 226/234 113 my mileage is terrible but my tune is suspect. Car just reeks of fumes at idle and stalls out when cold and at times when warm

1Psycho

iTrader: (9)

cam only it's making 360/350 at the wheels but again, that's on a 133k mile ls1 with stock 98 heads, stock ls1 intake manifold, and a stock fuel system

LilJayV10

iTrader: (39)

I found out today that my driver side collector is leaking in two spots. It's not enough to hear but I can see where it's blown carbon on the bottom of the floor pan and I can put my hand around it and can feel the air coming out.

I'm sure its sucking fresh air in telling the 02 sensor its lean. I'm sure this is some of my problem. I also found out that my e cutout wasn't closed all the way. Again I couldn't really hear it put man it was pushing out some air. It's under the back seat and I wouldn't think it would effect the 02's but maybe it is. I'm going to fix that tomorrow.