Originally Posted by
LS ROB
I tried big mikes method but i must have missed a step (a couple of times) and could not make things work for me. I actually had someone help with the tune and with as much experience they have, they said the same thing i was thinking. My engine just seems to want lower BRAF than other engines. Idk why, they dk why but when i first saw what was happening, i noticed that it correlated with my under/over spark tables. I'd tweak BRAF based on what gear vs rpm the timing pull happened. Might be helpful to log "Current Gear" or whatever its called so that you can review it in the log. Where my car is a swap vehicle, my ecm doesnt know what gear im in, so it's a drive and mentally note type thing lol.