Originally Posted by dax turbo

At torque of the devil chris noticed that the fuel pressure was not increasing when the boost came in causing it to run lean and then misfire. My bosch 044 should supply 4.4L / min. I tested this both direct from the pump, before the fuel rail and at the return at the tank....all fine at 2+ L in 30 secs...

Fuel pressure regulator should increase the fuel pressure but it didnt...the only thing i can assume is that the regulator is at fault...agreed?