m50 hard hot start + power loss

[Chris916]

So after running the car hard at autoX, the car becomes hard to start. its as if the fuel pressure has to rebuild. it usually takes 2-3 long cranks before starting

Once it gets going, throttle lags if i step on it and the car just doesnt seem to be pulling as hard as it should.

after some research, it sound like it could be:

check valve in fuel pump
pressure regulator

Does this make sense? is it possible the 318 fuel pump isnt enough for the m50?

thanks

[Chris916]

any suggestions?

I replaced the FPR tonight, however cannot test the car (since its not street legal) So i will find out this weekend at Calabogie if it changed anything.

[jrdeamicis]

If you could it would be interested to meter the HFM and see if its getting signal to the dme. You can do all of this from the x6000 connector.