need help??

[hic0491]

just installed rb20det into my s13 ran for a while if i plugged in the maf it ran worse with it very slow reving smelled very rich. would not start with maf plugged in so i had to get it started by unplugging it then plugging it in once runnning and then reving it ti keep it running. hardley able to rev it above 3000 on wide open throttle eventually it would build up and rev up holding open throttle 4 like 30 sec. idled like **** with maf plugged in better without. and 2 day i came out and was checking some stuff tried to start it and nothing! i checked it has good spark and fuel to the rail. injectors were not firing! so i checked some things and found out injectors have constant power even when key is off not sure if this is normal? also when cheching them with test light they work when touched with the grounded test light double and triple checked my wiring and grounds with and came up with nothing? bad ecu? did the 55 test and checked out so im baffled any suggestions?

[nissans13240sx]

possibly bad maf sensor. Check your fuse for ecu. Also check your wiring again.