Guys with Boost-Referenced Regulator...
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Joined: Nov 2001
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From: Raleigh, NC
Guys with Boost-Referenced Regulator... Since I'm at 58 ~ 60 PSI Fuel Pressure and peak at about 13 ~ 14 PSI boost, is there a way to have the Boost Ref regulator rise at, say 1/2 PSI per 1 PSI of boost, and see if that is enough? Won't 71 ~ 74 PSI fuel pressure be too much fuel pressure for my system?
Sorry... I seem to be a novice dancing into new territory every so often.
Tell me what you guys do and what is sane. Thanks!
Sorry... I seem to be a novice dancing into new territory every so often.
Tell me what you guys do and what is sane. Thanks!
That pressure is fine. The whole idea of having a referenced regulator is to keep a constant pressure across the injectors, and not playing games with a varying injector flow rate. Not rising 1:1 would defeat the purpose 
Only thing to watch is how much the pump flows at that pressure. Generally, flow drops as pressure goes up. But even a Walbro 340 is fine over 70psi
Only thing to watch is how much the pump flows at that pressure. Generally, flow drops as pressure goes up. But even a Walbro 340 is fine over 70psi
How about the same thing you said harlan but with a Bosch 420L @ say 75 psi of fuel pressure running around 650rwhp..... shouldnt it still flow enough to support that much rwhp?
Thanks
Kyle
Thanks
Kyle
you could start with a lower base if that makes you more comfortable. You want it to rise 1:1 as Harlan said so maybe try a lower base fp if you are trying to limit the total fp under boost.
Originally Posted by cablebandit
you could start with a lower base if that makes you more comfortable. You want it to rise 1:1 as Harlan said so maybe try a lower base fp if you are trying to limit the total fp under boost.
Kyle
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Joined: Nov 2001
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From: Chi-Town, IL
Originally Posted by NA$TY-TA
Thats sounds good to me..... Bos what does your fuel pressure sit at, at idle.........
Kyle
Kyle
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Originally Posted by BIGBOS
61-62psi on the gauge, until I started to run out of fuel today, due to my faulty gas gauge that I didn't know was faulty......dropped down to 45psi and that 420L got LOUD
Kyle
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Verdad Gallardo Thread Starter
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Joined: Nov 2001
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From: Raleigh, NC
Thanks for the advice guys!
What I got out of that is that I really don't have to worry about the max fuel pressure for this level of boost, but, if I find I don't need that much, I can start at a lower base pressure and give it what FP it needs.
Thanks, again!
What I got out of that is that I really don't have to worry about the max fuel pressure for this level of boost, but, if I find I don't need that much, I can start at a lower base pressure and give it what FP it needs.
Thanks, again!
TECH Senior Member
Joined: Nov 2001
Posts: 11,603
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From: Chi-Town, IL
I'm sure the pump is ok, I was driving it today some more.......put more gas in it...
I will not go WOT w/the car until its said and done w/tuning........I'll let the tuner take care of that on the dyno.....
I will not go WOT w/the car until its said and done w/tuning........I'll let the tuner take care of that on the dyno.....
