I did an engine swap due to a bad rod. The computer worked fine prior to swap and now is popping the DME is faulted and I am sure it is causing many of the other codes. I had a bad injector fixed that. It is surging and it sounds like a blow off valve is popping. Any ideas on any type of reset due to engine swap? The DME shouldn't have gone bad being disconnected.

 

What year car you have? The R52 in S trim is a supercharged engine that is not goign to have a blow/pop-off valve that turbo has.

 

I believe it could be the fuel pressure regulator?

 

How did you disconnect the power, pulled the negative terminal off? What codes are you getting?

 

Moving you to Stock Problems/Issues area as well.

 

Yes it was disconnected at the battery and it is new with 13.3 volts being measured

 

OK, what codes you getting? You are sure all your electrical plugs and grounds are connected/tight? Hose clamps at throttle body and BPV are tight?

 

Yes ground is back on and plugs are tight my water temp plug would be only but that isn't an issue I will have to get on my schwaben scanner and look at what codes are pulling. The scanner is new to me so I haven't played with it to much.

 

codes that popped up are 21,63,64 1109 and 1242

 

Codes are 4 digits/letters, P1109 is the MAP sensor ( signal too high under decel) and is usually due to either a stuck throttle valve or an air leak. P1242 is MAP sensor # 2 same too high under deceleration and same cause.