Any thoughts or ideas welcomed.

Erst running L6 cosworth management, one day wouldn't start, been runing fine before that.

Checked relays to power the pump and ecu, both ok.
Pump runs when cranking, fuel is in the tank, flows through the rail.
Checked voltage at injectors and ok.
It sparks at the coil and at the plugs, had new leads, dizzy cap, rotor arm, group A coil and ignition module anyway.
Sensors swapped for new ones, TDC, Phase and MAP(3-bar)

Tried a friends ecu to check the ecu wasn't at fault, that was a L8.

The only fault reader we've got access to won't read the L6's codes, and gave a 3+3 on the L8, which i think could be down to the car not having a 4wd TPS on it for the L8.

Can any other sensors be at fault to stop it starting?

Any ideas to try or check out?

Thanks in advance

Scott