Here is the background: Recently bought this car, the kid I bought it from got it from someone else. This kid had no clue about the car except: it is a 306 with Trick Flow Top End Kit. Got the car dug through it, it has 24lb injectors and had a idling surge problem for about 15 minutes and heck to start up, but the car was running lean the plugs were white. I checked the timing sitting at 20 degrees backed the timing down to 14 degrees. Replaced the stock MAF with a Pro-M MAF for the 24lb injectors, it did correct the idling, but now she is running rich, I do have a fuel pressure regulator coming....question is would there be anything else to check if this fuel pressure regulator doesn't correct the problem and wondering if anyone else has the same set up and kind of give me some tips. I am coming into this car blind since it was built by someone else, it does have great parts on it just odds and ends that i was surprise to see left out like MAF and fuel regulator. thanks for any information.