Power Hungry Performance Forum - Worse mileage with gryphon on interstate

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Quote:

Originally Posted by bossman15 (Post 19753)

Yeah I set everything up with no custom tuning for the first week I had the tuner...I actually have 305-55-20 bfg's which is a 2650mm circum.. The tuner had it set at 2356mm so that definatly had something to do with it. I changed that and also firmed each shift up by one...is that okay to move the firmness?

Yes its okay to adjust the firmness on a canned tune.
Its also okay to do on a custom tune BUT SMALLER INCREASES should be used. Usually Bill gets the firmness tuned to a good feeling shift.

alright cool. man i cant even wait to see what bill's got in store for me...im sure ill be blown away.