Hi Geoff,

Sorry to hear of the problems and you do seem to have checked the obvious causes.

A few comments and ideas:

The TPS voltage is a bit high - it should be between 27v to .47v and the throttle position will be about 10 -12%.

The fuel pressure should be 58psi but 54 is probably close enough and maybe down to the gauge. Do check it stays at full pressure whilst the engine is running as there have been a few instances where the fuel pump pressure drops off once the engine starts.

Have you checked the spark plugs? Take them out after running the engine for 10 mins or so. The electrodes should be a mid grey and if the are black that indicated a rich mixture, if white too lean. Check the plug leads and the coil packs - wipe them over with WD40 or similar and feel for cracks.

Check the intake system - are the throttle body mounting bolts tight and are all the hoses OK. Similarly check the exhaust header bolts are tight and the exhaust is not blowing slightly.

Another suspect could be the crank position sensor. Bunny or Planenut should be able to give more advice on this.

A final thought, did this start after filling up as it might be something as simple as bad fuel.

Red Leader drive