I decided to mess with the tcm tune a little tonight, more or less to play with the TCC tables since the slip limits are available now.
Anyhow, I tried to make a 2nd gear start tune, for normal driving modes since 1st gear is so short. I changed the 1-2 upshift tables, 1-2 WOT , 2-1, 2-1 WOT and the according rpm table too.
At first I only changed the normal mode, left the hot shift and t/h mode stock, and it would be in first gear until I touch the throttle, engine hesitates for a split second then bumps into 2nd and carries on like usual.
I read an older thread on here that the 5sp calibrations don't like to respond to changes only in one area, so I changed all the shift modes to "0 mph" to start in 2nd but I had the same results. Now that being said, I can brake stall it and feel it hesitate and start building boost after it shifts (all while sitting still). Leads me to believe there's some throttle table I'm missing or isn't available? Are the guys doing it for sled pulling getting the same results?
This is all based on the factory tcm tune from my truck. OS 15196784 , cal 15169839
Anyhow, I tried to make a 2nd gear start tune, for normal driving modes since 1st gear is so short. I changed the 1-2 upshift tables, 1-2 WOT , 2-1, 2-1 WOT and the according rpm table too.
At first I only changed the normal mode, left the hot shift and t/h mode stock, and it would be in first gear until I touch the throttle, engine hesitates for a split second then bumps into 2nd and carries on like usual.
I read an older thread on here that the 5sp calibrations don't like to respond to changes only in one area, so I changed all the shift modes to "0 mph" to start in 2nd but I had the same results. Now that being said, I can brake stall it and feel it hesitate and start building boost after it shifts (all while sitting still). Leads me to believe there's some throttle table I'm missing or isn't available? Are the guys doing it for sled pulling getting the same results?
This is all based on the factory tcm tune from my truck. OS 15196784 , cal 15169839
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