Robert Posted July 26, 2009 Share Posted July 26, 2009 Hi, Ive got a L24E that Ive mounted a T4 turbo and megasquirt on. Im having problems with the injectors maxing out, and my question is, is the NA FPR 1:1 under boost as well, or will I need a new FPR? Mod list for those curious: Stock L24E 25PSI boost Supra 440cc injectors walbro 255 fuel pump Intercooler Upgraded clutch T04E turbo Performance is GREAT! Quote Link to comment Share on other sites More sharing options...
1 fast z Posted July 26, 2009 Share Posted July 26, 2009 Yes, they are both a 1-1. Quote Link to comment Share on other sites More sharing options...
Tony D Posted July 27, 2009 Share Posted July 27, 2009 1:1 is what you want. Get bigger injectors, or bias (increase the spring pressure) the FPR for higher fuel pressure at idle to make the injectors you have deliver incrementally more fuel to make up the difference. At 25 psi, even in an L24, I would expect a 4 bar static pressure setting to get fueling correct at that output level. Quote Link to comment Share on other sites More sharing options...
Robert Posted July 27, 2009 Author Share Posted July 27, 2009 1:1 is what you want. Get bigger injectors, or bias (increase the spring pressure) the FPR for higher fuel pressure at idle to make the injectors you have deliver incrementally more fuel to make up the difference. At 25 psi, even in an L24, I would expect a 4 bar static pressure setting to get fueling correct at that output level. Well, 440CC (~44 US LB something, hehe) should be enough fuel for my application in theory... Im going to check the wiring to my fuel pump, as well as mounting a aftermarked fuel pressure regulator. Increasing the idle pressure doesent help very much, but 4bar was actually my exact thought! Also, Ill go from injecting all 6 injectors simultaniously twice, to once, giving a whole ms extra of time to squirt. Hopefully these mods will bring me down to 90 %, and maybee even lower. Though, I am thinking of welding an extra injector with dual map If Im still in trouble.. I was hoping for a bigger camshaft to, so maybee Ill just have to sell the injectors and get some ~600`s... I never thought the L24E would need that much though... Quote Link to comment Share on other sites More sharing options...
Tony D Posted July 29, 2009 Share Posted July 29, 2009 Watch out chaning from two squirts to one...you can get terrible drivability from that! Mine wouldn't even run that way (single squirt) due to the FPR not being able to regulate pressure consistently due to the large drop in fuel rail pressure. An accumulator is a must if you go that injection route! You always need bigger injectors than you think you do. My wifes' car has 440 supra injectors on it! Quote Link to comment Share on other sites More sharing options...
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