Can someone tell me if http://www.americanmuscle.com/stmilel.html
would work on my 2006 Mustang GT. I recently installed an offroad Xpipe and the check engine light popped up.

Idk if I should buy it or not for I already wasted my money on a new set of O2 extended sensors which was something I didnt even need.

 

Those won't work on our cars, only good up to '04.
You'll need a tune that turns off rear O2 sensors.

 

Besides getting a custom tune to turn off the O2's, you'll also appreciate the additional power gains; a heck of a lot more than what that O/R X gained.

 

AM labels their products very well with the model years.. s197 is computerized so you get a tune to turn off the sensors. It's like when people ask about chips for our generation car