Quote Originally Posted by dave w View Post
Gearhead-efi link for 16196395 information: http://www.gearhead-efi.com/Fuel-Inj...Information-OE

Using the TunerPro compare option, possibly compare BJKW 94 C-G-K Truck 7.4TBI 4l80.BIN vs. BJDR 94 C-G-K Truck 5.7TBI 4l80.BIN from the link above (7.4 vs. 5.7).

Possibly compare BHDC 94 C-G-K Truck 7.4TBI 5speed.BIN vs. BHDF 94 C-G-K Truck 7.4TBI 4l80.BIN (Manual vs. 4L80)

I've noticed some .bin files (like BMHK I posted above) have Altitude Spark Bias set to ZERO and most .bin files have Altitude Spark Bias set to 9.8. On your current .bin maybe try Altitude Spark Bias set to ZERO to see what happens to the odd spark advance numbers seen in data log.
Okay ill try the altitude spark bias and ill compare all those those bins to see what exactly changes too. Thank you