Myxalplyx Posted June 10, 2005 Share Posted June 10, 2005 The obvious question to this statement is Can u up the stock FPR at all? or is MegaSquirt required... Up the stock fuel pressure regulator? I don't know! Can you up the stock fuel pressure with an aftermarket unit? Yes! http://www.ultimatesubaru.org/forum/showthread.php?t=31047&highlight=dyno Quote Link to comment Share on other sites More sharing options...
WJM Posted June 10, 2005 Share Posted June 10, 2005 NO. upping to fuel pressure to MAX on the stock injectors DOES NOT WORK. I upped my pressure to ~60 PSI. at 15 PSI of boost on stock turbo, stock everything...except for TWE header/Downpipe/STi TMIC/intake/EBC at 15 PSI....the injectors went to 100% duty at 2800 RPMs. 2,800!!!!!!!!!!!!!!!!!!! It went lean at 2800....and got worse. Climbed to 16.5:1 at 5500... the stock injectors are no good for power higher than 130~140 at the wheels on a stock EA82T. 12 psi....is on the edge. We need 450cc+ for any real power beyond 160hp/200tq. Quote Link to comment Share on other sites More sharing options...
quattroPilot Posted June 10, 2005 Share Posted June 10, 2005 NO. upping to fuel pressure to MAX on the stock injectors DOES NOT WORK. I upped my pressure to ~60 PSI. at 15 PSI of boost on stock turbo, stock everything...except for TWE header/Downpipe/STi TMIC/intake/EBC at 15 PSI....the injectors went to 100% duty at 2800 RPMs. 2,800!!!!!!!!!!!!!!!!!!! It went lean at 2800....and got worse. Climbed to 16.5:1 at 5500... the stock injectors are no good for power higher than 130~140 at the wheels on a stock EA82T. 12 psi....is on the edge. We need 450cc+ for any real power beyond 160hp/200tq. Hmmmm, guess we'd need to find larger injectors, or else just hit Megasquirt Quote Link to comment Share on other sites More sharing options...
calebz Posted June 10, 2005 Share Posted June 10, 2005 Hmmmm, guess we'd need to find larger injectors, or else just hit Megasquirt Even with megasquirt you have to have the mechanical ability to get the fuel into the combustion chamber. If the stock injectors won't do it, the only thing MS will do is lengthen the injector pulse.. That can make it harder to tune. MS with larger injectors and a variable injector pulse would be the right way to do it:D Quote Link to comment Share on other sites More sharing options...
quattroPilot Posted June 10, 2005 Share Posted June 10, 2005 Even with megasquirt you have to have the mechanical ability to get the fuel into the combustion chamber. If the stock injectors won't do it, the only thing MS will do is lengthen the injector pulse.. That can make it harder to tune. MS with larger injectors and a variable injector pulse would be the right way to do it:D Alright! need larger injectors Quote Link to comment Share on other sites More sharing options...
Myxalplyx Posted June 11, 2005 Share Posted June 11, 2005 MS with larger injectors and a variable injector pulse would be the right way to do it:D *I'm not trying to be an arse but* this is the thinking but it haven't been proven yet on our cars. Has anyone shown this to be the case? Quote Link to comment Share on other sites More sharing options...
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