Hi all, hopefully I can get some help here. I have installed a high stall 3000rpm torque converter within my c5 00 corvette. My issue is that after this install my car wont go from 1st to 2nd gear until very high rpms 2500-3000rpm while i am lightly holding the gas. If anyone can look at my tune or point me in the right direction I would HIGHLY appreciate it. I am one who is really trying to learn and not mooch off your hard work so please guide me. Here you go : V5 rpm shift issue.hpt
can you attach a log of the issue and a mod list?Originally Posted by slayer12
2018 Camaro SS, Maggie 2650, 103 TB, Big Gulp, E85
How did you guys work around the brake torque limit feature with a stall convertor?
Your part throttle shifting works on MPH, not RPM; if
your shift is happening at the right MPH for the TPS
you're at, then RPM just "is what it is".
But my 3500RPM converter lets me cruise at 1500 and
will shift there, or not much higher. Your RPM seems a
bit high for a lower stall speed converter although high
STR models (mine was designed deliberately for low STR)
will slip more at the low end and "lay over" earlier too.
Anyway, MPH and TPS at the point of shift, check your
part throttle upshift table and there's your answer or
your question, depending.
Also, the trans is using output shaft speed and rpm, not gauge speed or engine rpm. If your speed calibrations are a little off, it can throw the shifts off without your speedo being off.
What you are seeing is the engine rpm and the effect of a loose coupling at low speeds of the converter.
Jaime
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