Scoob+Bike=Fun

Hi all, I had the 2.5l conversion done on my 1995 STI RA, with uprated clutch, but std ecu ( I didnt take it above 0.2bar boost and it didn't det) first of all, every so often it wouldnt start, and did when IT wanted to, but now, problem is that the car would be a pig to start when warm, but idled fine, and then it didnt start when it was cold unless with a bump (only small, but started every time and never with the key) I got CEL faults on the boost solenoid and crank sensor so I replaced them, still the same! now it wont even idle either, and runs like a bag of ****, any thoughts?

maybe 2.5 starter, new batt, MAF, crank and cam sensors and coil packs, i'm not bothered if I cant put my foot down before I get the ECU, just want it to Idle, as it used to on the std ECU, but wont now.