no not yet. its constantly in the back of my mind, though. im going the most obvious to the least expensive then pony up the bucks for the CP route. It'll stutter/sputter almost stall when idling, and in first and second gear up to 2k rpm sometimes, then itll surge into power and continue smoothly until redline if i wanted to. gas mileage isnt dropping and when im just cruising on the interstate or around town itll act fine as long as it doenst dip below 2k rpm then the stutter miss lope sputter on no dont stall on me, please, happens.