OK, here we go.
This is an '02 TrailBlazer and is my wifes Daily Driver, so I don't need a drag racer or any extra HP tuning. The car is completely stock with no mods to either intake, exhaust or tranny.
I ordered the tune because I hear how great the increased drivability is afterwards and the extra MPG is a huge factor (even 1 MPG more would be a 5% improvement, which make a $$ difference when my wife fills up the tank every week); the extra HP is a nice bonus but not a primary factor.
I *hate* the tranny on this car; it hangs onto a gear for ages and shifts so slowly. I would like a snappier shift, but not looking for a thump in the back each time. I know most guys would go with shift firmness at seeting 2 (I would if it were my vehicle), but I am suspecting my wife might prefer the softer setting of 1. I just want to reduce the annoying shift pattern of this tranny. What can be done as far as actual shift points..?? Can we shift earlier for extra economy..??
My other question is about octane rating. Can we stay at 87..?? is '93 for those vehicles with tuning mods..??
Thanks..!!
Dave.