That mileage SUCKS!

On a bad tank I still get ~20mpg in straight city driving.

That's with my lead foot and constant full power spins to 7500 or so.

It's normally 22-23mpg city and 28mpg on the highway.

My engine is 20% larger too.

2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.