my ls1 cars were pretty decent on gas when i kept my foot out of it. im wondering how the lt1 is on gas. i wont be going internal...just bolt-ons. im hoping doing some intake and exhaust mods will help the gas mileage as well.

 

I think its not uncommon for an M6 to get 28 mpg or so highway?

Mine does great on the highway, ~25mpg, but horrible in town, like 12mpg.

 

well my 97 is an a4. its in the process of being shipped to me. i wont be able to drive it for a week. i just wanted a lil heads up since we are now paying over 3 dollars a gallon. so all u a4 lt1 guys, what kinda mileage u gettin??

 

i took a road trip just recently and averaged 25 on the highway, not too bad for an a4

 

when my 95 roadmaster was stock except for homemade cold air intake, and glasspacks, I was averaging 28mpg on highway trips. Not bad for the Lt1 pushing 4000+ lbs, then again I had the highway gear from hell; 2.56

Matt

 

I got 14-15 mpg on my blown setup babying it on a mail order tune

 

Stay out of it(which isn't too often) I've seen 17 in city. And 31 on hwy (when i first got the car) I hardly use the highway though. I got a 97 M6 3:42's.

 

combined highway/city, shifting generally around 3K, I average around 16/18 mpg.
This is with yearly fuel filter changes, 93 octane, and shitty New England traffic.

 

definetly get rid of cats and get intake/exhaust you will see a pretty damn good gain and also better performance. Stock m6 with flowmaster i would get almost 30 on highway. Now I get about 24 which isnt bad for a stroker