A6 c5 2.7t misfire
 

2001 Audi A6 2.7t misfire after intake manifold removal, changed manifold gaskets and all the rubber/plastic below including spider hose. I deleted auxiliary water pump and put everything back together. Did timing belt a few months ago and it had been running great until now. I swapped the camshaft position sensors and the code stayed on the same side, even checked timing and it looks like it is correct. I am open to any advice at this point, its just sitting in the garage until i can figure it out. Wish i had it for the snow.
Fault codes:
16730 Camshaft position sensor (G163) implausible signal
16688 cylinder 4 misfire detected
16687 cylinder 3 misfire detected 16690 cylinder 6 misfire detected