after i turn off my car, my fuel pump stays on, i know its normal for it to do this, but a lot of times it seems to stay on EXTRA long, like a good 30 seconds after i turn off the car..... what do you guys think this has to do with?

my idea: maybe a wire cross between the fuel pump relay, and the MAF burnoff relay, since after ignition shutoff, the MAF burnoff relay gets power, and goes through a cycle to burn off the access carbon on the MAF sensor

 

also, i have a non-adjustable fuel pressure regulator.... i've already replaced it once b/c my fuel pressure was NOT holding after ignition shutoff. the pressure would drop IMMEDIATELY after i turned off the car, instead of holding pressure like it should have.

 

Oil pressure sending unit it going out if the Fuel pump stays on that long. The OPSU controls the pump and when it reads X amount of oil pressure it keeps the pump on.

 

really??? thats def. weird b/c i have a brand new sending unit in there.... i know that means nothing, but thats weird