exhaust back pressure correction function

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David Claflin
Posts: 22
Joined: Sun Aug 19, 2007 8:48 am
Location: Ft Walton Beach Floriduh

exhaust back pressure correction function

Post by David Claflin »

Does anyone know what does this do?? Is there any point in manipulating the numbers??
I've got two XDF's an older version and a newer one. The newer one has all the values as the same whereas the older one has different values.
Any reason for this?
1990LX 306, 77MM Pro-M, 75MMTB, Holley SystemaxII, Neil Erickson ported Edelbrock performers, 1 3/4"BBK longtubes, T5, 3.73's, Mach 1 disks, 18.5 city 27 hwy, Moates chip, Tuner pro,334RWHP/351RWTQ
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dex
The Ford Guy
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Joined: Thu Oct 07, 2004 6:38 am

Post by dex »

It is used in the exhaust pressure calculation (PFE EGR) to compensate for exhaust pressure only increasing at half the rate that barometric pressure increases. You should not need change this as it is a correction that Ford derived from pressure chamber experiments.
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David Claflin
Posts: 22
Joined: Sun Aug 19, 2007 8:48 am
Location: Ft Walton Beach Floriduh

Post by David Claflin »

Ok, thanks!!
1990LX 306, 77MM Pro-M, 75MMTB, Holley SystemaxII, Neil Erickson ported Edelbrock performers, 1 3/4"BBK longtubes, T5, 3.73's, Mach 1 disks, 18.5 city 27 hwy, Moates chip, Tuner pro,334RWHP/351RWTQ
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