I found a local tuner that tunes with Tuner Cat software. He is actually in Columbia, MO. I asked him some questions about how he tunes and here is his answers.

What kind of software do you use?

Tuner Cat


Also, do you change the A/F ratio for maximum
fuel mileage.

In cruise mode


And how what kind of mileage gains could
I get with the 4.8 V-8 and the 5.3 V-8.

I have seen 2 to 5 mpg depending on how you drive.


I would like to get a tune from this guy, but I haven't really heard anything about him. And also what is tuning in cruise mode all about? He has a website at www.cp-performance.com. Let me know what you guys think.

 

never heard of him, but he's got one insane pontoon boat lol
http://www.cp-performance.com/custom4.html