Fuel Miser S4. An oxymoron?

[3 bar]

Here's the plan guys. Once I get my corrado back on the road I plan on tearing down the S4. Besides a good tune up 1st I plan on getting an new .52 6th gear set from jaybquick@JHM (He's on the B5 S4 Forums) as well as a cat-back exhaust. This should free up a little power and drop my revs down from about 600-800 rpm on the freeway. Some of you guys have stated that an aftermarket exhaust has actually increased your gas mileage by about 2 mpg. So I'm thinking I can realistically get about a 4 to 5 mpg increase on the highway. What do you guys think.

[RAudi Driver]

Who will be doing the work on the transmission?

[3 bar]

Either NGP or induktion motorsports. I'll probably take the trans out myself though.