Ok, so I had the flash tune done on my BA XR6T and the car has been running beautifully, until recently, when I go to over take and kick the car back, it gets up to about 3000 RPM and misfires, or coughs, pops and farts or something, but it sounds and feels horrible. And when the car is stationary and in neutral, I rev the car up, it hits 3000RPM and the revs die and drop right back down again, but I haven't taken my foot of the pedal Now I'm not a mechanic or anything, but I'm guessing it's either a problem with the throttle position sensor, Coil Pack/Plugs or injectors. I've put injector cleaner through itm abd it's made no difference If anyone can help me out and advise what to do, or if anyone else has this problem, could they PLEASE let me know, it's driving me nuts, and I thought I would try here before taking the car into Ford and paying thru the teeth Cheers in Advance Micheal