I have a 1704-A on a '05 F350 and when in the high performance tune the truck will not up shift to 4th unless I let off the throttle. I have had this tuner for a while now. #1059752. All other tunes up shift fine, but the high perf one. Whats up? Bad tuner? Bad tuner flash?

 

Call Superchips. Only they can assist with calibration issues and they'll need to know the calibration id on the truck to see if there is a problem with the tune.

 

Thanks. I thought I'd call them this week. I also thought I'd post it here and see if it was just me or something "known" that I'd had missed. Where can I look for the cal code on the '05's? Not sure if it will matter as I am going in for the reflash and stuff for the recall notice. Maybe the tuner will work better after my truck is reflashed?

 

I have the 1704-A on a 2005 also. No problems on stage 2 but when I switched to stage 3 I have been unimpressed to say the least. No noticeable change in performance and the transmission doesnt go in gear right away. When going from drive to reverse you can drink a cup of coffee waiting for it to engage. I am considering a change to the Predator even though I will be giving up HP in stage 2 (used when I tow in the summer).