This thread elaborates upon the inadequate fuel flow aspects of the Walbro pumps that I brought up recently.

A correct conclusion: use a pump that can keep up with the demand at hi pressure. The stock injectors have shown themselves to work well in our HRC turbosystem installations with a correct fuel supply such as our ACCEL pump.

The Walbro pump, as I mentioned earlier, is adequate for factory turbo applications (GS-T, GS-X) which never see more than 65-70 PSI pressure. It is NOT adequate for VROG equipped installations such as our 420A turbo cars, as it was never intended for such high pressure delivery.

Please DO NOT try to run at a lower fuel pressure under boost as mentioned in this thread. If HRC customers have further questions about these issues (although they have nothing to worry about, since their systems come with a properly engineered fuel setup), they can contact HRC Tech Support daily at 630-801-9065.