Originally Posted by polyspheric
Just a comment?
All transmissions get a terrific BANG on the shift (slightly reduced by a loose converter), which beats up the friction material, loads the anchor points, etc. and also shocks the entire chassis. Oh, that's why the car jumps, tries to climb a tree, blah, on the 1-2!
Has anyone dealt with this?
My Lexus DD has factory spark retard to kill some power on the shift using a signal from the shift solenoid. Helps, not adjustable.
An MSD box could do this if it could "see" pressure applied/released on gear change inside a 727 valve body, if some clever person could find a place to tap in? On the linkage might work with manual VB but you'd have to estimate and program the retard time in .001 seconds, etc.


Used to do this on 1-2 for .5 seconds(-10 degrees) found no benefit on the 2-3.
I just used micro switches on my shifter.

"use it 'till it breaks, replace as needed"