I have a 1985/1 944 car with a 1986 engine. Here is why.
I was street racing (1/4mile for fun) on an deserted road with some friends, about a year ago. Who thought their Rice Grinders, with a WING on the back was faster than my 944, so I had to prove them wrong. So half way through the race the engine started knockin while doin 100mph in 4 gear at 3500rpms. So instead of pulling over and checking it out and trying to save the Motor, I held the pedal to the floor not wanting that wimpy honda to beat me durring these times. when i hit the finish line white smoke poured out of the engine compartment and the engine began shaking villently until it ceased up.

comming to a screatching halt.

"oh ****!!!" i thought. knowing it was horrible.
so got it home and yanked out that motor sure enough a piston went through the block and out the oil pan.So I puchased a cheap new/used motor from ebay. the engine was from a 1986 944 with 140k on it. I had the guy start it up before he pulled it out of his car so i made sure that it ran before i got it. a couple weeks later I recieved it. slaped the new motor in and started hooking up everything when i came across a plug that didnt match the wiring harness.... so this is the part I need.
on this link i need the sensor #21 part or a name of the sensor so i can get my car back on the road
http://www.9ss1.dk/porsche944/dele1.htm
or if its really needed to be hooked up. any help on this would be very helpful.
oh by the way i did win

, but it hurt me hard too

i really miss driving my 944