electrical problem
 

i just replaced my 86 TII's turbo with an S5 one, had the car idleing, turned it off installed fcd now it won't start. i tried removing the fcd but that didn't help is it possible that i fried my boost sensor or something would that do it? It isn't flooded out i checked for that. It catches and idles low with the help of the starter but as soon as i let go of the key it dies. I'd apreciate any thoughts at all. thanks.

maybe its flooded.

i checked that

if you wired up the FCD wrong its very possible that you damages the boost sensor, or popped a fuse, or burned the ECU...

try starting it with the boost sensor disconnected. if it starts then your sensor is fucked up.

upplugged the sensor still no start. Is there any tests i can try to determine wether my sensor or ecu is screwed?