i reckon nip the pressure back to 45, see what happens. that old animal head was basically getting on for 250-300bhp worth of air capability (in flow terms), it was mapped perfectly for all this flow, now you have less it needs less fuel. i;m sure weve covered all this before.
Yeah that's the theory i'm working on
I'll lower the fuel pressure later and see what happens. Prehaps the new bottom end needs to be built sooner then I thought
After a bit more of an investigation, i'm 100% sure that it's the tps as fault. With the engine not running and with the ignition on the tps reads fine and can be setup easily. As soon as you start the engine the tps readings are all over the place and you can see the ECU jumping to different areas of the map . So i'm ordering another one today!!!!
i remember looking at that tps on the sunday. it doesnt appear to be touching the throttle body if you see what i mean. it touches near the spindle, but the fixing tabs are like 3-4mm away from the body, and remember those allen screws are bloody tight, we had to undo them with mole grips during the engine swap last year.
i reckon the tps has been stressed too much, i.e fastened very tight at each end, but only grounded near the spindle, kinda bending it if you like.