Hi,
Got a few problems with my RB20det 1st off i did my head gasket in it about 2 months ago so i put my spare 20 out of a wreck i brought had that engine in the car for a week and blew a turbo return water line and put a hole in piston 6.
So i was forced to put a new head gasket a Tomei 1.2mm with some hylomar on it and i put a hypergear tr43 turbo on it. I also wired in a z32 afm plug and still have the standard rb20 afm plug on it as well.
My problem is that the car runs but it idles at about 2000rpm and when it revs above that it cuts out at about 3-3500rpm.
My quick diagnostic is that the 2nd afm plugs are causing the computer to read the afm wrong, or that the computer is still in limp mode after the engine failure of the last engine or with all the plugs being disconnected that one or 2 havent got good connections.
Any ideas or thought about this issue that might help would be great full.
Also ive got a standard comp with a remap.
Cheers David