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I did, the fuel rail pressures are good, getting in excess of 1650 KOEO when hot. Idle pressure is around 430 PSI. Cleaned the spill valve. Only significant thing I have noticed is the injector pulse width at zero when stumbling occurs. I'm trying to figure out what is causing it to shutdown.

I have a 2008 Speed3 and I am having a similar issue. However, it is somewhat different ,the stumbling occurs only under load, does not have to be WOT in fact it happens during smooth acceleration, never when stationary. I can sit in my driveway/garage and rev the snot out of it and it never...