Fueling Upgrade
#54
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I removed the reg from the OE fuel module and blocked off the port for it. The rear reg is set to factory fuel pressure. I think the front is set to 68 or 70 psi, so it is essentially closed until the Magnafuel kicks in causing the waste from the rear FPR to dump into the surge tank. You could actually run somewhat smaller injectors with this setup because it is a dual pressure system.
Edit: You could do away with the rear reg. I'm not sure how that would affect the factory pump and intank components though. There is a pressure relief port on the OE pumps. Maybe wire it to shut down when the big pump kicks in. This could be a safety feature as well, because if the big pump should fail, there would be no fuel at all and therefore no chance of running lean because only the OE pump was running at WOT.
The bungs on the surge tank are actually all at the front near the top, not on the top of the tank as in the drawing (I just cut/pasted the tank from somewhere).
Last edited by DrX; 04-23-2011 at 04:21 PM.
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