Quote:
Originally Posted by Tractionless
I swapped over the entire VR valve body with solenoids and employed the Z's TCM. My 3-4 shift is still harsh (had this problem with the OE Z trans) and now so is the 4-5. I'm leaning toward needing a new Z TCM as stated above the valves were swapped from the VR.
All downshifts are much tighter and no more driveline "slop" that felt like a blown mount or bushings.
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That would have to be either your original Z TCM or the tune (either factory or aftermarket tune) on the ECM.
So a re flash at the dealer or your tuner should fix it.
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NA on E85 - 12.402 @ 112 mph
100 shot E85 - 11.589 @ 117 mph
JWT C2 cams rev Base Circle & Titan Valves
Last edited by SG4247; 05-18-2024 at 06:40 AM.
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