I know, I know.. there is already a post on this.. I have read and re read for the last 2 hours trying to find where I first saw it... I was thinking my chip may correct it...
the post/info I am looking for is the directions for the recalibration to be done without taking it into the dealer hopefully...
thanks in advance Guy

 

Yes your chip *should* correct your speedo for tire swaps. You may have to send it to Diablo or Ken (online store) to get it set up for the tires you have.

 

Oh... I got the chip from Ken, and have spoken to him already about it .. it seems it isnt going to work on this one

 

Guy,
I have the same "special" ECU that prevents speedo recalibration. Let me know if you are ever able to overcome it...

-CRJ
2k X lmt on Weld 16 x 10 'phoons w/35 x 12.5 AT's. Pro Comp/Liftmaster 6" lift and 6x Rancho 9000's, Superchips 1715 tuner, K&N intake, AirRaid throttle body spacer, cat back 3" sst exhaust into FM70 big block, 2.5" dual out.

 

The problem is some of them us a magnetic pickup for the speedo and the speedo is controlled external to the chip. Both Superchips and Diablo have confirmed that there's no way we can get around this. The Truspeed or a dealer can do it.

 

I spoke with my local dealer about recalibrating the Speedo when I move to 315's from the stock 265's. The best they can do is get within 5 MPH or leaving a 10% error. Will the TruSpeed add-on have any negative impacts to ABS, or other speed related devices based on the stock Speedo? Is there another way to go to recalibrate the Speedo?

2001 Excursion LTD PSD, 6" Procomp Lift, 315 75 16 BFG ATKO