ok....my friends car was running really bad, missing and all. i saw the fuel trims maxed out, put my slp MAF on and after that it ran great, the next day same problem again. what else could it be? its just weird it woudl be ok one sec and then real bad the next? any ideas here? thanks

 

Did you reinstall your MAF back onto your car to see how it runs, I'm just wondering if oil got on the MAF wires or the connection got loose?
Al

 

no i didnt but thats a good idea...