Quote:
Originally Posted by ritter875
but out of curiosity how does the kit work to correct this problem? Thanks!
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By helping to keep the 1-2, 2-3 shift timing low or below .65 seconds. When the P1811 (max adapt, long shift) DTC sets the PCM sees an issue and commands high line pressure causing the harsh upshifts.
The advantage of the Thrasher kit is it comes with more rebuild parts like new accumulator springs and the accumulator housing gasket so the cost is relative.