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My '05 is doing the same exact thing that you explained before you got yours fixed. It only does it when I'm turning. Is that what yours did? Also, mine is out of warranty. Any idea what it would have cost you?

Sorry it took so long to get back. Lost the hard drive on my computer. Before I did the programmer I was getting about 17.5. Now that I have run it with the programmer for about two months, it is stuck at 19mpg even with fairly aggressive driving! The exhaust and intake were done over a year ago.

Better Mileage I put a K&N intake kit, Flowmaster exhaust, and used a hypertech performance programmer and I am now getting very close to 20 MPG with my '05 Tahoe!

I have a 2005 Tahoe with Flowmaster exhaust and a K&N intake kit. I just got a Hypertech Power Programmer iii and was wondering if anyone has any advice on how to get the best performance out of it?

K&N I have a 2005 Tahoe and I have Flowmaster exhaust and put a K&N intake on recently. I have noticed that I am getting much better gas mileage than I used to. Today I got the Hypertech Power Programmer I bought last week and I was wondering if anyone has any advice on how to get the best...