Plug in Trans shift improver
Thread Starter
Joined: May 2005
Posts: 550
Likes: 0
From: Valdosta, georgia
Summit sells this thing you plug right into the trans harness that supposed to improve line pressure and give firmer shifts. Any of you guys use this and is it worth it?
no dont get it, i have talked to many people in the past when it first came out and most had problems with it causing trany failure. Your best bet would be a shift kit and programming. You could just try some new programming also and see how you like that...
All it does is up the line pressure using the PCS solenoid. I have heard mixed feelings on it. I have never personally tried one. You can not go wrong with a good old fashioned shift kit.


