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Old 16 March 2009, 07:13 PM
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joe joe88
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Hi,

Anyone know what injectors i will need to achieve say..... 350-400BHP with supporting mods.

Because im having my classic EJ20 re-built with forged internals etc.
Old 16 March 2009, 07:31 PM
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shaggy6
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There is a chart some where, but im sure 550 will cope upto the 420 mark i think.. correct me if im wrong someone??!!
Old 16 March 2009, 08:14 PM
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bluenose172
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550's will be fine as long as your not playing with mix's of ethanol(bio) and the like.
Old 16 March 2009, 08:15 PM
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trevsjwood
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I'm told they would be all done by 400bhp, I don't quite know what that means in terms of duty cycle because if they were maxing then I wouldn't want to go there. When they're close to maxing the spray pattern becomes unreliable.
For my money I'f I'm close to 400 then I want my injectors at 80% D/C and for my newage that means 650 injectors
My STI pinks are at 85%DC running 350BHP (but have 10% methanol)

Last edited by trevsjwood; 16 March 2009 at 08:21 PM.
Old 16 March 2009, 08:19 PM
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TingTongPJ
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think about your future plans then you only need to buy your injectors once. i went for 740's
Old 16 March 2009, 08:35 PM
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Anger
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740's for me to
Old 16 March 2009, 08:46 PM
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joe joe88
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And the 740's can be limited down to 350-400 BHP yes?
Old 16 March 2009, 08:53 PM
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TingTongPJ
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yes joe it's done by the mapper, at least then that side of things is not anywhere near maxed out.
Old 16 March 2009, 09:03 PM
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trevsjwood
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650's top out at 470bhp
Old 16 March 2009, 09:10 PM
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650's are New-age fitment as 740's are classic fitment
Old 16 March 2009, 09:32 PM
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550cc injectors on STD fuel pressure wont see 400bhp, 650cc > would be better leaving room for a safer map if needed.
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