redsx13

Ok so here is the deal-
After spending thousands of dollars trying to fix my SR i really need some advice on what my problem could be, I am completely out of Money, so i need to get this thing running myself.


Rundown, I'll keep it brief-
-Motor is stock redtop sr, car is 93 240sx
-Motor has never run correctly after swap
-Like the post says, Motor seems to miss-fire at idle (mechanic says its running very rich),
-In the higher RPM's, car runs smoothly, but also lacks power.
-After a drive, it will stall at idle, but then start up and and idle again (still misfires)

What has been done- (if you think its something i checked, ill check it again)
-No codes on ECU
-replaced TPS (bad)
-replaced MAF (bad)
-replaced injectors
-replaced ecu
-replaced coolant temp sensor
-replaced spark plugs (ngk iridium)
-checked for boost leaks
-checked for vaccum leaks
-checked vaccum hoses (correct hookup locations)
-checked timing
-checked grounds
-checked power and grounds on ecu plug
-checked Greddy Bov (closed all the way)
-checked turbo (for runout/ missing teeth)
-checked compression (150psi x4)
I have been to two shops, both can't figure it out, One shop hooked up a power fc and got it running pretty well like that. (should i just consider going this wrought)

The only other thing i could think of is the harness, but i dont really want throw any more money down the drain.
I will take any Ideas at all!