high RPM problem
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high RPM problem
When I am racing car and go into 3rd gear (th-350) the car is cutting out like its hitting a rev limiter (it is set to 8000) but it isnt. I am data logging car with HPT with a LC-1 wideband. There are no big swings in AFR, no knock, inj duty cycle is at 50-60%. I am running VPMS101, fast 96, MS4, PAT STG 3 5.3 with -5 cc pistons, Pat gold springs, tr55 with 40 gap, walbro 255 and harlin sharp rocker arms. However this problem was present with stock rocker arms. I am running 24.5 deg of timming. When I run the car on the street in thrid gear with no problems. I am at a lost of wehat wrong with car. any ideas out there
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Have the transmission section of the tune checked out. I bet it's something in there. Mine was actually both my transmission (burned up a little after 400 passes) and the tune parameters/values were incorrect causing it to hit the limiter on every WOT. It's being tweeked this week by my tuner but so far after a freshened trans it has not hit the limiter again and goes through every gear. I'm not a tuning expert, but I believe some of the values in the trans section have to correlate or it will not react properly. Have that tune checked out ASAP before something in the trans is possibly ruined!