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Whats are your shift points? Is it pulling timing? Bumpers truck does good on the big end
The 1-2 is around 6300 and the 2-3 is around 6200. No timing being pulled that I know of. Timing ramps up to 27* at the shift points. I'm still running a Nelson mail-order and no wideband sensor so it's probably running rich and safe.
Yeah we changed the whole trans tables. The 13.29 pass was right after i reflashed the tcm with a change in the shift facter so it didnt have time to "relearn" which was fine with me considering i dont like to abuse my truck back to back.