classic subaru my head hurts problem
 

Hello fellow scooby owners right pair with me this is long winded and head hurting
Ok well ive rebuilt a subaru impreza 1995 wrx from ground up complete shell strip i never had a engine so i bought another subaru 1995 wrx that had been stood for years with a engine problem it wouldnt run unless map is unplugged so i thought not to worry ill be stripping engine anyways

So i removed engine replaced headgaskets,and different heads i relapped all valves etc
Different inlet manifold with
Throttle position sensor
Idle valve
Injectors
Loom
Maf
Coolant temp
02 sensor
Fuel filter
Adjustable fuel reg set to 3 bar
Ecu
Vac pipes
Map sensor
Boost sensor
Converted back to single coils

Now ive replaced all these 3 times with ones off my friends and still same
Ive measured voltages on throttle sensor and are within tolerences

I can get it to run for 2 seconds lumpy and dies if i disconect throttle sensor and maf it starts no problem and ticks over sweet just cant rev obviously if i reconect while running it dies

Connected black connectors no codes stored

Much appriciated reading this far
Im really hoping someone can give me a pointer something im missing

Thanks so much

Quick update since out of 86 people who viewed this post not one person had a clue and replied any sort of advice
I moved earth to starter and fitted new plugs gapped to 0.7
And it fired up to a degree