I have 3 chips--2 trucks. Just wondering if any chip could be 'altered'/'tuned'(by the 'tuner', not me!) to raise the shift point into overdrive. Mine shifts into o/d at about 37(?) mph--would like it to shift at say, 45 mph. This would keep the trans from 'hunting' back and forth from 'D' to o/d in city traffic. Then, would also like it to downshift into 'D' at a higher rpm/mph.

Would make the truck more responsive while affecting mpg slightly...?

Dan

 

Hi Lightnrod,

Yes, that can be done. However, what you're talking about is not just "shift points" in general, it doesn't work like that.

What you're talking about are specifically the extremely light-throttle upshift points, as all shift points get higher and higher in direct correlation to amount of throttle opening, automatically, up to the highest upshift point set @ WOT (wide-open throttle).

Most people simply turn off the Overdrive when they're driving at anything less than highway speeds, as that is what Overdrive is for, *cruising* speeds.

If you want that adjusted, that can be done, to answer your question.

 

Thanks Mike. Dan

 

Anytime Dan!

Just let us know if you'd like those adjustments made, & we'll be happy to take care of that for you.

I forgot to respond to one point you made, when you were asking about this type of change making performance better while having a slight effect on gas mileage....... to answer your question, yes, that is basically correct. Having us delay the light-throttle upshift into Overdrive can sometimes cause the mileage to drop just a bit, but probably half the time we find that it doesn't go down any, because you don't have as many downshifts & upshifts in city traffic, like you mentioend, and that can save a bit of gas sometimes, so it's probably going to be a "wash", mileage-wise, while giving you the improved part-throttle performance you're looking for.