[wrongmark]

I've now adjusted the wastegate actuator (by one turn to the original mark I made with a sharpie). I tried to run the test but I can't get my ISTA to work (keeps hanging on "Vehicle Identification). I'm no longer getting the exhaust error 130304. But I am now getting 130E20 - Inlet camshaft: angular offset to crankshaft outside tolerance.

I swapped the VANOS actuators back to their original sides and cleared faults, but no change.

The car now goes into limp mode immediately on starting, even after clearing the faults. Whereas it took a good few minutes each time before.

I'm worried that the timing chain guides might have been on their way out and I've finished them off with the new tensioner, causing it to skip timing.

Still open to any advice, but I think I might have to give in and take to my local BMW specialist. I just worry that they'll jump straight to throwing a timing chain in there at considerable expense and that it might not solve the underlying issue (that I've probably caused).