How is the base pulse constant figured out for table F28A on the $58 mask? I know it is a function of cylinder volume and injector size, but could you go through an example on how to figure the constant? I've searched the forums on diy-efi and syty.net with no luck.

 

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BPC = 1461.5 * (VOL / RATE)
VOL = Vol of 1 Cylinder in liters
RATE = Injector flow in gms/sec
gms/sec = (lbs/hr / 3600) * 453.6
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It looks like this might be the one.
The info I have on that mask isn't complete.

 

Ok thanks for the great answer. I figured you'd be the one to ask on such things

 

**Usually** if you look at similiar hacs to what your working on you can spot simulairities, ie a Speed Density is a speed density. So some of the stuff kind of lines up from say a TBI to a SD port. The code is somewhat a series of patches and they often repeat themselves from one mask to another.