I had my RB20 in my s13 running for about 30 mins, and then shut it off. When I tried to restart it about 10 mins later, it wouldn't start. I discovered I melted the two black wires going to my Z32 MAF to the exhaust manifold. I blew the fuel pump relay and the engine control fuse. Now I have no fuel, and no spark. I've been trying to figure out what it is by lurking on a few forums for the past 3 weeks, but to no avail. I have tried replacing the fuel pump relay and the control fuse and the CAS. So far all I get it cranking, but the engine will not turn over. I've tested the voltage going to the MAF sensor and it was just under 12v and I've tried testing the voltage to the CAS and it was at 5v. Please help me!

1 get a new harness or 2 take out the one you have and check all the wiring for shorts.

Did you find out what happend!!!!! I did the same thhing!!!!!!!