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**Shane@DBPerformance** · 01-08-2009

I meant that the deadtimes affected it a lot at idle, often more than anything with huge injectors, I had just worded it poorly above.

Here is the formula to find injector flow with changes in base fuel pressure. Injectors are usually rated for 43.5psi.

SquareRoot(New Fuel Pressure / Old Fuel Pressure) * Old Injector Flow in CC = New Injector Flow in CC

SQRT(40psi/43.5psi)*1600cc=1534cc

1600/1534 = 4.3%
1534/1600 = 4.1%

01-08-2009	#6
Shane@DBPerformance formerly ecoli Join Date: Oct 2003 Location: On the dyno Posts: 4,892	Re: Base fuel pressure adjustments I meant that the deadtimes affected it a lot at idle, often more than anything with huge injectors, I had just worded it poorly above. Here is the formula to find injector flow with changes in base fuel pressure. Injectors are usually rated for 43.5psi. SquareRoot(New Fuel Pressure / Old Fuel Pressure) * Old Injector Flow in CC = New Injector Flow in CC SQRT(40psi/43.5psi)*1600cc=1534cc 1600/1534 = 4.3% 1534/1600 = 4.1% __________________ www.dbptuning.com