jakeoster Posted June 11, 2011 Share Posted June 11, 2011 Well I got to drive the car for 20 or so miles so I guess it's time to get serious. My fuel system is a steaming load of you know what. No protection from fuel starvation, loud buzz, jury rigged fuel lines, fumes in cabin. It's already leaking after 20 miles. I'm done screwing around. I'm going to be doing a full overhaul and I had a question about the fuel pressure regulator. I know there's one on the fuel rail already. But I'm going to upgrade to a high flowing, high pressure pump and was wondering if I should get the Nismo FPR that goes on the fuel rail or an external one, such as an Aeromotive. Does the Nismo have the ability to regulate a high pressure, high flowing pump or is it only suited for a mild upgrade such as a walbro? Thanks. Quote Link to comment Share on other sites More sharing options...
jvquattro Posted June 11, 2011 Share Posted June 11, 2011 Which engine management did you go with, since the Power FC was fried? Quote Link to comment Share on other sites More sharing options...
pat1 Posted June 11, 2011 Share Posted June 11, 2011 On my rb I used the nismo it did the job but I had to put a gauge on it everytime. I know I could of added a gauge but really didn't have the room.. On my 1jz I put a aeromotive With a port for a gauge and it's bad ass. They are almost the same price. The aeromotive looks better IMO. Quote Link to comment Share on other sites More sharing options...
motoman Posted June 11, 2011 Share Posted June 11, 2011 (edited) I went with an External FPR. I don't have the car running yet, so i can't really say much more. I was thinking of using something like this in place of the stock regulator. Edit: You might want to think about a surge tank too. That will help with the fuel starvation. Edited June 11, 2011 by motoman Quote Link to comment Share on other sites More sharing options...
jakeoster Posted June 11, 2011 Author Share Posted June 11, 2011 So if I go with an aeromotive would I have to eliminate the stock one on the fuel rail? I'll have the fuel starvation issue sorted out, no more messing around with that. As for the Power FC I sent it to Apexi and they are going to repair it. Quote Link to comment Share on other sites More sharing options...
dwarlick Posted June 11, 2011 Share Posted June 11, 2011 Yes you will have to eliminate the stock fpr. Quote Link to comment Share on other sites More sharing options...
Canadianz Posted June 13, 2011 Share Posted June 13, 2011 There is an aluminum adapter you can buy for the stock rail which replaces the stock FPR with a male AN fitting. Its like 15 bucks. If you look the STi's and WRX's have a similar rail and their adapter fits our rails. At least that is what I used. No point and switching out the rail too unless you have a set of injectors too that needs a new rail as well. So go buy an Aeromotive FPR, and the adapter and your in the running for cheaper than the Nismo and have a gauge too. You might want to look into getting something like a TT Supra in tank pump or run duals. Just off the top of my head I can't think of anyone who has actually "starved" and blown up their RB on this site from improper fueling. The plumbing adds up super quick... You can always just cut and weld a sump on your tank, put the supra pump in a rack and presto. A solid fuel setup without running a mortgage's worth of AN fittings. Yes you will have to eliminate the stock fpr. Quote Link to comment Share on other sites More sharing options...
Canadianz Posted June 13, 2011 Share Posted June 13, 2011 Here is the part, you can go either barb or AN EJ20 adapter The dsm guys are having great luck with the TT supra pumps, some running 600+ hp with the pumps, they are quiet and reliable too from the reviews ... Quote Link to comment Share on other sites More sharing options...
motoman Posted June 13, 2011 Share Posted June 13, 2011 Thanks canadianz for that bit of information that was very helpful. Quote Link to comment Share on other sites More sharing options...
jakeoster Posted June 13, 2011 Author Share Posted June 13, 2011 (edited) Thanks for that adapter. I was leaning towards the Nismo because I have my boost controller hooked up to that (I think? Arnt home to look at it right now). How would I hook up my boost controller with the Aeromotive? Edited June 13, 2011 by jakeoster Quote Link to comment Share on other sites More sharing options...
Canadianz Posted June 14, 2011 Share Posted June 14, 2011 Thanks for that adapter. I was leaning towards the Nismo because I have my boost controller hooked up to that (I think? Arnt home to look at it right now). How would I hook up my boost controller with the Aeromotive? Your boost controller shouldn't have anything to do with your FPR vacuum\ boost reference. That is one line you don't want to T into. It controls the rate in which your FPR will ramp under boost. Your boost controller should be referenced off your intake manifold pressure to get the most accurate idea of what the vehicle is actually ingesting, pressure wise. The Nismo unit has gotten good reviews but you are stuck with plumbing in a gauge before hand for fuel pressure and you are stuck with stock sized, barbed lines. However the install is easy. Stock FPRs will leak over time with a strong pump as a side note. Glad the adapter helped someone, most hot rod guys will have an aeromotive or similar fpr around the shop so its a quick way to put it to use. Oh and the "HKS" version is about 50-90$ ... so might want to stick with generic. Quote Link to comment Share on other sites More sharing options...
jakeoster Posted June 15, 2011 Author Share Posted June 15, 2011 (edited) Got this in the mail today, has an in-tank Aeromotive A1000 pump. Would a 70psi regulator do ok with this pump? If I'm not mistaken the fuel rail needs 30psi to be right. Edited June 15, 2011 by jakeoster Quote Link to comment Share on other sites More sharing options...
70 Cam Guy Posted June 26, 2011 Share Posted June 26, 2011 Sweet fuel cell! If I recall, the fuel pressure is closer to 3 bar (43-44psi). For my fuel rail, I have the Tomei adapter from FRSport. I bought it with the 90 degree elbow and barb but there's an AN fitting too. http://www.frsport.com/Fuel-Pressure-Regulator_c_113.html rail adapter - http://www.frsport.com/Tomei-185106-Fuel-Pressure-Regulator-Adapter-Nissan-Subaru-Toyota_p_16572.html -6 AN - http://www.frsport.com/Tomei-185105-Fuel-Pressure-Regulator-Fitting-1-8-NPT-AN6_p_16585.html Quote Link to comment Share on other sites More sharing options...
motoman Posted June 27, 2011 Share Posted June 27, 2011 43-44 without a vacuum source. If you ever turn the boost up you can actually run little higher rail pressure to keep from running lean. Quote Link to comment Share on other sites More sharing options...
jakeoster Posted June 28, 2011 Author Share Posted June 28, 2011 Thanks for the response. I've been stag on the project as of late due to other commitments. I just uncovered today that I am going to need a fuel pump controller. They are $300 and I have to wait for my apexi power fc to come back from repairs to hook it up I presume because it needs a tach signal and I'm fairly certain I fried my tach signal a while back by accident. Fun fun fun Quote Link to comment Share on other sites More sharing options...
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