Ok, so i jus swapped a 77 motor into my 78 shell. Im using the 78 ecu. I also have a 240sx 60mm tb with the 240sx tps. I never touched it. i pluged everything back where it supposed to be. Now when i start up the car. I can rev it up a bit for maybe a few seconds then it'll begin to stall and if i try to give it gas, the rev's drop and car tries to stall n when i let off the gas, the revs may come bak up a bit then it'll jus stall most of the time. wat is going on here? can anyone help me figure this out? Oh yeah, i also removed the air regulator