1998z28ss

Curious what all you guys out there are running for mileage? I just calculated my mileage and I was getting 12 in the city! Thats horrid. I haven't been on it that much. I get about 27 on the highway.

What could I attribute this bad mileage to other than replacing the right foot I'm guessing new fuel filter, maybe o2's?

blkZ28spt

Search.

I get 11 mpg around town but I have a bigger cam and a 4,000 stall speed converter.

Has it been properly tuned in as is condition?

Cobra2WS6

iTrader: (22)

Ouch 12 city and 27 highway lol thats a huge difference... I get like 20 city

Domestic Demon

iTrader: (1)

Are you A4 or M6?? If you have an automatic, especially one with a stall, that would explain your poor city fuel economy.

blkZ28spt

That's what happens with big converters.

I get 11/26

rgk615214

not alot of stop and go traffic here but im getting around 20 to 21 mpg

1998z28ss

No I have a manual. I think I'm going to do O2's and fuel filter and see how that works.

It had a dyno tune 8k miles ago...

NotAnLS1Girl

I'm supposed to get 17 city and 21 highway. But, I've been getting about 14 average. 16 if I'm lucky. The sad thing is that I drive mostly highway...

PLucas

iTrader: (1)

I get 18-20 city and almost 30 on the highway. m6 car

1998z28ss

I'm thinking its a combination of the cam (all that intake charge being sucked straight into exhaust) and in need of a fuel filter/o2s...just wanted to wait on the o2s since they're so expensive

but 12 is rediculous...most of the time I dont even rap it to above 3k

1998z28ss

I'm thinking its a combination of the cam (all that intake charge being sucked straight into exhaust) and in need of a fuel filter/o2s...just wanted to wait on the o2s since they're so expensive

but 12 is rediculous...most of the time I dont even rap it to above 3k

98camaroLS1M6

iTrader: (35)

Clean your air filter, replace fuel filter, check spark plugs and wires and replace if bad, replaces the O2s, about $60 a piece at advanceautoparts.com(bosch), put some synthetic oil if you don't already, you said you had a dyno tune but what about a part throttle/ drivability tune this could help if you haven't done this. You should be at about 15-16mpg with the mods you have. Good luck!

1320_Racing

iTrader: (44)

18-20 on city about 27 on highway!!

1998z28ss

thanks yeah I'll replace the air filter and maybe switch back to synthetic after this castrol's time is up