Quote:
Originally Posted by axsaxoman
smaller they can run the better it will be for emissions at low rpms .changing from 3 bar to a 4.5 bar reg will usually give you another 12-15% --but again this is only a rough guide
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Sorry to pull this up John, but I'm rather interested in the the effect of increasing the fuel pressure in terms of increasing efficiency - as I'm guessing there would be better atomisation with increasing exit velocity (through an increase in fuel pressure). My worry is that it will run rich in open loop conditions (idle is my biggest concern for MOT emission regs). You mention 'will usually give you another 12-15%', is that power I'm assuming?
I've got standard injectors, and the usual intake and and exhaust modifications so I know that increasing the fuel pressure would be overkill in my case if I'm pursuing hp although I'm not thinking of it increasing it to even 4 bar - is it viable or am I barking up the wrong tree?
Cheers,
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