Okay so the problem is that it declines rapidly while driving and then kinda idles while trying to give it gas, but will go back to normal. It also shutters, like it's going to die both while driving and especially while sitting (park or just @ at light). We have had the calibrated converter fixed & also the sensor? that feeds into the converter. We have also did some gas treatments on it as well. We have been told it may be an electrical problem, but are worried this is gonna end up costing up. Also when trying to read the computer it scrambles in chinese so nothing is coming up. PLEASE HELP! Thanks