hi, i've got a 1999 tt quottro(225) and am having problems due to a power loss. I put a boost gauge on it and ever since then it's lost a lot of power! This may just be coincidental because we've gone through and checked for air leaks in hoses and checked for cracks in the diverter valve and there is still a big loss. The vacuum is very strong at idle and i don't think it's a vacuum leek. It's running very low boost. The only visible split is on a breather hose that comes out of the rocker cover into the induction system.Could this be affecting the performance? Or can you suggest anything else that might be the problem?
The MIL(engine) light is not illuminating when the ignition is switched on. Maybe the previous owner had something to hide!
Thanks a lot, help is much appreciated!