I am working on a 1999 Audi A4 Quattro 2.8 V6 . New plugs and wires, new battery. Throwing a P1545 code. Tried all the TB recaluations after the code was cleared. Will not hold an idle. Car will run if you manage the throttle. When car is running and the code is cleared, the engine revs cleanly to about 3-4000 revs for about 10 seconds or less then goes back to running like shiz.... as a point of interest.. the info display is a bit f'ed up to the point some of the pixels are not working... dont know if the info display screws up other area's of the elctronics.... I will pay for someone with a VAG COM to reflash, otherwise off to the a Audi tech........