First, take the POS ProM 75mm MAF off and put the stock on back on (awaits the, I don't have the stock one reply).
Secondly, what do you mean by 'knocking'? Like the rod/main bearings are gone in the car? I don't think I've ever heard of a Duratec oil pump going bad...or is it a detonation 'knock' (more commonly refered to as 'pinging').
Thirdly, specifically which codes is it throwing? That will tell you/us more.
