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patkeefe patkeefe is offline
one of the great unwashed
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Join Date: Apr 2004
Location: Ringwood, NJ
Posts: 2,850
Fuel Pressure

Originally Posted by 911st View Post
One more.

Add a boost modified fuel pressure regulator on the fuel head return line to bump system pressure under boost.

Doesn't the control pressure regulator simply allow more fuel volume to the injectors via differentail pressure in the head? This is the impression I have been under. I actually found a clever little device at Summit Racing, which is basically a variable speed drive for the fuel pump which drives from engine rpm signal. I figured if one could get the WUR dialed in on lower pressure at lower RPM, there would be plenty of fuel then for high boost/RPM operation, and maybe get the mid range flat spot out.

I may have brough this up before, but that was a long time ago, so forgive any possible redundancy!

Patrick E. Keefe
78 SC
01 Boxster
Old 05-03-2009, 02:17 PM
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