Smooth Throttle for UpRev

juicinjake

whats is the stall speed on your converter? it sounds like your transmission was slipping up until stall speed like its supposed to... until you got enough speed to lock up in that gear. when you did your revs started climbing with respect to your speed again. prior to that your speed was climbing but your rpm was holding constant (indicating slippage). that said, thats perhaps slightly more relative to the older domestic automatics that i actually have experience with. modern transmissions with electronic control units really are designed to vary the line pressure to smooth a lot of that out. perhaps what has happened was that in all this throttle and vvel tuning, your base fuel schedule for a given rpm range has increased/decreased due to running a larger/smaller cam profile at that speed and therefore requiring more/ess fuel. this means that the value plugged into your calculated load map is now off and that can affect transmission performance. log your calculated load and base fuel schedule and make sure thats not off anywhere... especially in that 3k range where you are experiencing the slip. if all that checks out id say that your converter is just slipping, as intended, to allow the engine to get up into its powerband. the only reason u notice it in 1:1 and not the other gears is because its a long gear. in the lower gears you probably accelerate past that point of slippage quicker and dont even notice it.