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I would try a LSX 376 motor tuned by MAC

If you have DOD get rid of it. Get rid of all tm, back off of 1-2 shift pressures change dfco to 1800-1200 add 3deg timing to high and low octane tables I gained 6-7 mpg

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Don't trust your fast wide band. We have three fast wide bands at the school that I teach at, we trusted them tuning lsx 376s on engine dyno, and camaro procharged on chasis dyno for two years. We...

Nashville Tn Home of Nashville Auto Diesel College

I have a 2011 Silverado 4x4 5.3 flex deleted DOD added timing for milage tune. Ill report back.

What statagie should i use for more fuel milage. could diable the dis on demand, any clues

I have a 04 silverado 5.3 im getting 24 mpg with pure gas I have slight KR at very light loads 15 to 40 kpa less than 20 percent throttle but I run in open loop with 18/1 afr at 50kpa or less above...

Freindly bunch I have made 3 post not one reply

How do you test and calibrate a fast wide band sensor. When do we know to replace or calibrate after running leaded race gas.

We also had the same trouble, we added AFR hi-res to tables works fine now!

How long of a pipe would you need after the header collector to make the wide band read correct, 02 z28 procharger open headers only used on dyno for teaching tuning.:drivin:

Do I set my comanded lambda at the AFR desired ex 12.5/1 or to stoich of the fuel Im using ex 15.1/1 VP 110 to make my Lambda Err work correct:worship: