Okay so the more I think about it, the more I'm leaning towards timing.
If a car is advanced or retarted by a tooth, you will definitely see a loss in performance and driveability.
When I did the timing belt, the supplier did not have the 16v kit but they did have the 8v kit. Which I basically just used the crank lock and the belt tensioner tool, as far as the cams go, the gap in the camshaft is exactly 10mm, so I 3d printed a nut that fits the thread on the side of the special tool area on the cylinder head with an allen key cut out so that I can position a size 10 allen key through it. The fit was perfect and perfectly centered, also there is no way it could have moved from that position even if I tried.
Does the engine light illuminate when the timing is out on these cars? My obd tool, under start sequence does say: allowed. So usually that means the ecu is happy with the cam and crankshaft sensor position?
Has anybody changed their own cambelt on here?