aperseghin Posted October 25, 2010 Share Posted October 25, 2010 Is there a tcu for the renix aw4 setup? The shift points could be a little smoother and probably save gas as well? Link to comment Share on other sites More sharing options...
Eagle Posted October 25, 2010 Share Posted October 25, 2010 The "Power - Comfort" switch smooths out the shift points in the "Comfort" mode, and results in worse gas mileage because smooth shifting = slipping transmission. After the Renix era, Chrysler dropped the switch and hard-wired the TCU in the "Power" configuration for improved economy and transmission life. Link to comment Share on other sites More sharing options...
knever3 Posted October 26, 2010 Share Posted October 26, 2010 Have you changed your fluid and filter lately? I changed it in my '98XJ and the shifts were much smoother, at first I didn't like it but after it was so nice. Link to comment Share on other sites More sharing options...
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