Mike,

Same guy as the Mustang (been deployed). I retuned the H2 with the perfomance tune again and have the same "surge/rpm" issue. Any suggestions?
Thanks,

Mac

Mike, it has been a while (been deployed since the last email) but I am back and still have the same problem. I took the vehicle to the dealer and he checked the flash and states it is the factory flash now. Could it be possible that the new factory flash is of a newer model Mustang? I am still ...

Correct, you talked me through the reset procedure and now I have this error message.

Mike, I attempted to reflash the vehcile but the device keeps telling me that there is a performance tune already on it. Could it be possible that the Ford Dealer reflashed the PCM with my performnce tune from the orignal or they didn't actually change it out. Regardless, if that is the case I have ...

Sir, I have received my new "brain" and I am ready to expand its capability again. What fax number should I send the paperwork to?
Thanks.

I have reflashed to the factory setting and do not have the "surge". I will run the vehicle until it's time to get gas (doesn't take long) and will reflash to the performance and provide an update.
Thanks.

Thanks, you guys are awesome!!!

Q: ECM is being replaced in my 2005 GT Mustang. Will I be able to reload the perfomance tune when I have a new "brain"?

Vehcile would not crank due to anti-theft system going haywire; thus unable to reload factory tune prior to vehcile being transported to dealership.

Thanks.

Thanks for the reply, yes the RPMs fluctuate. It's not quite shift shock but appears as if the engine is not getting enough power within that range. I have not put the factory tune back on, I will try that and see if I am having an unrelated issue to the predator.

Background: I have a 2004 H2 Hummer that I have a performance tune. Mods to vehichle are Volant Cold Air Intake and Flow Master.

Q: When driving between 45 and 55 MPH the vehichle surges. Can this be corrected?

I have re-tuned the vehicle but continue to have the same problem.

Thanks.

Mac