SHELBY GT 350 Member
Joined: Sep 2010
Location: see user name
I won't pretend to have a vast wealth of knowledge on the subject, but in layman's terms I'd say there's a good chance you pissed it off. Does the car still run? Most of these devices require that you begin with a factory stock tune file to begin with, as tuning an already tuned pcm with said device can corrupt the vehicle's pcm. In layman's terms, anyway.
Actually on second thought, there's a chance the X4 just recorded/downloaded your existing tune as the factory original. Try the "return to stock" option from the X4's menu and see what happens.
Where did you buy the device from? Most places (AM, Latemodel, Steeda, UPR, blahblahblah etc) that sell them include custom tuning with the device. If you didn't buy from one of those, most will sell you a set of tunes for like $100. I don't know how much actual tuning you can do with the device itself, as the various places that actually write tunes have software that allows for greater adjustment and of more parameters than the end-user adjustments on the device allow for.
2001 GT Convertible
All the usual bolt-on's /200 I6, C4
And a few Explorers too... 2008 4.0 XLT 4x2, 1996 XLT 5.0 4x2, 2003 Sport Trac XLT 4.0 4x4