Car, only sometimes runs terrible especially at low speeds and load. I looked at damper with a timing light and sure enuff, the timing at idle/off idle is jerking around. Timing mark pops counter clockwise every few seconds. I figure this is ppotentially dangerous if it happens in boost...as i believe its advancing when it spikes. I have a translator Plus/Extreme. Ive checked all wiring to it, replaced crank sensor., put in another module/coil, "excercised" all the switches in the T+ box. And actually car ran perfect for a few miles, then problem just comes back. Thanks