Questions on Fuel Return System
01-11-2006, 08:25 PM
#41
Originally Posted by overZealous1
no need to Y again before the fpr. just get one with dual inlets, single outlet. feed from the rear as that gives you the least amount of bends for flow. bends in the returns are not as important. in the pic of the rails on the motor i was short one fitting so just imagine it hooked up, lol. those are the only pieces i used (minus the lines) to make the return. i used an inline walbro though in stead of intank. still have the stock pump w/ no mods to the stock fpr or anything. using the stock pump to feed the walbro. will find out how much flow this is good for to please everyone very soon. the stock pump should freeflow enough fuel to keep the walbro satisfied making the pressure and theoretically, the stock fpr should never close. on the down side, the walbro inline is noisy. i can live with it though. just need to insulate better. there is a perfect spot for it under the car under one of the covers by the trans.
reading that again was like deja vu. Can't wait for the final results. If it's good i'll probably go with your setup. Sounds simple.
01-12-2006, 06:26 AM
#43
400rwhp is somewhat borderline... at that level it would be nice to have control over your fuel pressure. What is more important is if you can get your car tuned how it needs to be or not. You can always give it a shot and if you cant get it tuned how you want as your increasing boost, then you know where to start.
01-12-2006, 09:34 AM
#45
I've always been a firm believe, that a proper FI system should utilize a return system and rising rate FPR...period. So to answer your question...yes.
IMHO, you cannot discuss tuning and fuel requirements without knowing two things: Injector size, AND fuel pressure. With vascilating, unstable, or unknown fuel pressure, tuning becomes increasingly challenging, as you dont have a steady fuel delivery platform to tune with.
A return fuel system will benifit anyone with a forced induction car, and becomes increasingly important as you push past 400whp.
IMHO, you cannot discuss tuning and fuel requirements without knowing two things: Injector size, AND fuel pressure. With vascilating, unstable, or unknown fuel pressure, tuning becomes increasingly challenging, as you dont have a steady fuel delivery platform to tune with.
A return fuel system will benifit anyone with a forced induction car, and becomes increasingly important as you push past 400whp.
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