Quote:
Originally Posted by Bsinclair
Mike, I noticed your return going through the flex fuel sensor only. I did the same thing on my grand national but ran into problems. I have a 10 feed and 8 return. i noticed while on the dyno the fuel pressure flat lined on the 4psi gatespring then started to fall off at higher rpm's. This showed a restriction on the return side which at first i thought i had a regulator problem. turned out the flex fuel sensor was just bottle necking return fuel. we added a y into the inlet and outlet from the flex fuel sensor and that fixed the issue.
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It should be returning 100% of the fuel when the engine isn't running and I'm having no problems like that. Were you running this same sensor or the older one that has the inlet and out let parallel to each other? I plan to keep my eye on it regardless.