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EFI Live v5 maf conversion function question

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Old Oct 16, 2003 | 04:04 PM
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J 98ta's Avatar
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Default EFI Live v5 maf conversion function question

Looking for the correct formula to put in a Calculated PID for gms/cyl to be used for LS1 edit.

I used {SAE.J1979.MAF}*15/{SAE.J1979.RPM} in a calc PID , and the values seem too low .... Max of .11 on a 1/4 mile pass.

Thanks for any help.

'J
jman812@hotmail.com
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Old Oct 16, 2003 | 06:30 PM
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Default Re: EFI Live v5 maf conversion function question

make sure the unit for the MAF is in gms
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Old Oct 16, 2003 | 09:47 PM
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Default Re: EFI Live v5 maf conversion function question

Thanks for the reply.

The MAF I am logging is lb/min. Is there an additional multiplier I can use ? , or maybe I would have to record the maf in raw freq ?

'J
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Old Oct 16, 2003 | 11:41 PM
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Default Re: EFI Live v5 maf conversion function question

Try using the metric value for your MAF pid.

Richard
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Old Oct 19, 2003 | 08:38 AM
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Default Re: EFI Live v5 maf conversion function question

Hello, if you prefer to log in Lb/min then you could use the following formula in your calculated pid:

({SAE.J1979.MAF} *7.56) * 15 / {SAE.J1979.RPM}

Hope that helps!
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Old Oct 19, 2003 | 11:17 AM
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Default Re: EFI Live v5 maf conversion function question

{SAE.MAF.gps}*15/{SAE.RPM}

This is the Cylair formula to be used for Edit tuning.

Do you know that EFI V6 has the calc. pids already calculated for you?
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Old Oct 20, 2003 | 10:12 AM
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Default Re: EFI Live v5 maf conversion function question

Thanks for the reply's.

I should have known it was something simple.
I have not upgraded to v6 yet. It will happen soon though. Currently on v5 pro.

Thanks again,

'J

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