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Downshift Issues

Old May 8, 2020 | 08:34 AM
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kurazy kracka's Avatar
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Default Downshift Issues

Having an issue with car downshifting into second from a 40-45 roll. I am assuming ti's tuning related but want to try and figure out exactly what needs to be adjusted. I went from a tighter 3600 to a loose 4000. It's a prostreetautomatics 4l65e. If i hit it from 40-45 the car will go to downshift but then just bang the limiter. If I hit it from 50 the car will drop into 2nd and take off fine.
What is the exact issue I am having, the car trying to reach for first? Never did this with the old setup, but now it's a new stall and some more power.

Thanks!
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Old May 8, 2020 | 12:53 PM
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you need to scan it and see what it's doing.
The 60e with its wide ratios can have agressive downshifts.
See which gear is being commanded and go from there.
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Old May 8, 2020 | 01:15 PM
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Ditto ^^^
Your loose converter is allowing more engine RPM per MPH. You likely need to tune your shift tables.
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