Have just put the engine back into the car, it starts then instantly dies, when I unplug the afm, it starts and runs, soon as i plug the afm back in, it idles high for about 3 secs then dies.
Its a r33 with s2 engine. Have just installed the following:
-Gt35 turbo
-front facing plenum
-z32 afm
-555cc nismo injectors
-nistune (stock tune with z32 and 555cc injector changes)
-fmic
-040 pump
-timing belt, water pump, spark plugs (7 heat, 0.8mm gap)
Not sure what the problem could be, any ideas? What can I check? Thinking it could be a vac leak, may something to do with aac valve, dont know.