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Old 06-20-2003, 03:11 PM   #1
rupert
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Member#: 19373
Join Date: May 2002
Question Enough fuel for 20psi?

I am getting maximum 92.5%IDC at 12.6 A/F ratio running 20psi from 3300rpm dropping to 16psi at 7000rpm. I am running 520cc (at 3bar) STi injectors with a 355bhp fuel pump.

Will an increase in the fuel pressure from 3 to 4 bar using an uprated regulator reduce maximum IDC to 85%?
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Old 06-20-2003, 04:37 PM   #2
Si2WRX
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Join Date: Dec 2001
Location: Atlanta, GA
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309 hp on 93 + W/I
on Dyno Dynamics

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That's leaner than most people shoot for. Is that on C16 or something?

I can't comment on how much your IDCs will drop with increased f/p.
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Old 06-20-2003, 04:49 PM   #3
john banks
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Evo IX 345 WHP

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((3/4)^0.5)*92.5%=80.1%
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Old 06-20-2003, 04:50 PM   #4
rupert
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Default Mistake on A/F:-(

Sorry typing error 11.6 A/F ratio
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Old 06-20-2003, 04:58 PM   #5
rupert
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Default Sorry John I don't understand maths:o)

Please explain or perhaps just tell me that this means I am OK

OK on second thoughts my maths is'nt so bad or is it my memory

I recall Mr. G Bell mentioning that equation, must have forgotten.
Thanks for the reminder
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