Be very careful using any Predator tunes. I was assured twice if your truck had 11B23 loaded the tuner would work. My truck had 11B23 loaded yet the significant problems with the DPF were experienced. It appears that the supplier is using a trail and error mode of testing and the consumers trucks ...

Send it back for a refund. You will continue to be disappointed and your vehicle could be at risk. My experiences with the U7164 and negative surprises was very disappointing.

Be very careful with the U7164. There appear to be a number of unknowns as it relates to the 6.4 L.

My Predator caused a total DPF clog and toasted EGR. Diablosport needs to be much more forth coming regarding info and warnings regarding their products. I sent my Predator back for a refund and ...

2008 F250 Superduty 6.4L

Predator U7164

Revision - Feb 2 2012 V9r15

I am experiencing the same Extreme Tune limitation but the speed limit is 60 mph. I had our local Diablosport authorized dealer update my unit to the latest release.

Any thoughts or help.