shift on the fly turner and larger tires

[marinecowboy15]

I posted earlier about a F250 2001 it is a stock truck right now ext cab short box. All the help you guys have gave took and look and researched it all and i like the dp turner. But iam looking lifting it and putting 38" tires on it and i was asked the question should you use a on the fly turner with the bigger tires? And what is the best calibrator that can go from 38" tires to stock tires i will have to change it every winter and summer? thanks for you help again on my new question

[Demo250]

Are you asking what chip can calibrate your speedo with the bigger tires? As far as I know, no chip will do that. You can of course, get a programmer that will do it. My friend has the Bully Dog triple dog GT I think it's called, and it has a few pretty neat little features such as selecting tire sizes, when to defuel the engine, taking off the speed limiter, clearing DTCs, etc...

You could also just buy the chip and then buy a TruSpeed or something similar.
http://www.stealth-automotive.com/in...product_id=923

[marinecowboy15]

No iam asking if i should use a shift on the fly turner with bigger tires or should i do something elce. And what calibration add on can i get to calibrate the truck for bigger tires. I will not put a bully dog in my truck from what everyone i talk to and know that uses turners they us dp

[no-tel-in]

your terminology is a little off, but thats ok. What you are talking about is a "chip" and it is ok to shift on the fly no matter the tire size.... To recalibrate the tires I would use a scantool such as auto enginuity, either buying it to have as a great diagnostic tool, or borrowing someones to change tire size, it takes all of 5 min to do

[Demo250]

Originally Posted by marinecowboy15

No iam asking if i should use a shift on the fly turner with bigger tires or should i do something elce. And what calibration add on can i get to calibrate the truck for bigger tires. I will not put a bully dog in my truck from what everyone i talk to and know that uses turners they us dp

I wouldn't run the bully dog either, although I do have to admit it's pretty handy for all the extra features. And the fact that I have a manual trans makes these "generic" tunes a little better in my opinion, as half of the custom tunes are devoted to shift points. People say the downside to the generic tunes are the lack of tuned shift points being utilized.

Anyways, like no-tel said.. it doesn't matter what size your tires are, you can still use the 6 pos. chip. Just check out what I linked or what he mentioned for the speedo recalibration.