What else to upgrade with new stall...
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Would you guys suggest a shift kit even though I can change the transmission tune with EFILive?
for more info, check here https://ls1tech.com/forums/automatic-transmission/728728-commonly-asked-stall-transmission-related-questions.html
-and if you are already tuned without a shift kit, chances are your tuner upped your line pressure to firm up the shifts, return them back to stock when installing a shift kit.... the kit includes a boost valve that manually ups the pressure... no need for PCM changes anymore...





