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Question on IFR changes for new injectors..

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Old Jul 13, 2005 | 08:21 PM
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zupmanZ28's Avatar
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Default Question on IFR changes for new injectors..

I have 28.8's now, i'm upgrading to 36's. I have the excel data table that has been posted already for the IFR table change, but i'm not sure which fuel pressure reading i'm supposed to input.

Is it the KOEO fuel pressure, fuel pressure at idle, fuel pressure at WOT, fuel pressure with regulator disconnected...which one?

This is a stock pump if that matters. I'm sure this question has been asked a million times, i tried searching but couldn't find any terms that gave me good results. Sorry in advance for being an idiot...

Eric
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Old Jul 13, 2005 | 08:52 PM
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I am assuming you know that injectors are rated at 43.5 psi.

So the second pressure for your new injectors is what they are at at idle.

With the vacuum line attached if your fuel system is set up that way.

Hope that helps.
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Old Jul 13, 2005 | 09:19 PM
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thats exactly what i needed to know, thanks

Eric
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Old Jul 14, 2005 | 07:52 AM
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it depends how the table is set up and if it takes into account for fuel pressure drops towards wot, which the stock fuel pump tends to do.
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