Hey thanks!
I believe you might be able to use freeware version of vag com and a cheapo cable from ebay to check the timing. Not sure though since I use the genuine VCDS - it has more features.
Others have said you must check timing afterwards but the service manual doesn't say it. The computer does adjust fuel timing by itself and you can't adjust it. However, the camshaft timing is mechanical and linked to the position of the adjustable hub on the camshaft and timing belt. It's also possible that a boost hose is off but that shouldn't give you better mpg.
It's possible that the noise is a loose serpentine belt or the tensioner is bad/loose. If something is loose, find something and then tighten it
I believe you might be able to use freeware version of vag com and a cheapo cable from ebay to check the timing. Not sure though since I use the genuine VCDS - it has more features.
Others have said you must check timing afterwards but the service manual doesn't say it. The computer does adjust fuel timing by itself and you can't adjust it. However, the camshaft timing is mechanical and linked to the position of the adjustable hub on the camshaft and timing belt. It's also possible that a boost hose is off but that shouldn't give you better mpg.
It's possible that the noise is a loose serpentine belt or the tensioner is bad/loose. If something is loose, find something and then tighten it