730 Pump Shot

Bruce Plecan nacelp at bright.net
Thu Oct 12 19:50:16 GMT 2000



AE can be a very slippery slope, and alot varies by combo., now with that
said, usually best to tamper with it very little if at all possible, IMO.

The AE mulitpliers are TPS, MAP, and for CTS.
They are all used in the general fuel calulation.  Where all the fueling is
multiplied out for figuring the total injector on time.
Bruce


> >From 90% TPS to 100% just takes a small fraction of AE compared to
> >20-30%.

> Bruce, that makes sense.  But, what I don't understand is why at 0% TPS
> has a multiplier is 100.0 and 50% Differential TPS has a multiplier of
only
> 25.0 [insert confused look here].  That makes zero sense to me.  Opening
> the throttle 50% needs a much bigger pump shot as compared to not opening
> the throttle at all (0%).  Yet 0% has a mult of 100 and 50% has a mult of
> 25.  Again - I think that I am missing something really simple here that
> one comment may bring to light.
> Is Differential TPS = the delta between two throttle openings? i.e. idle-
> >WOT = 0%-100% or 100% Differential TPS?
> Furthermore, what does the multiplier multiply?
> Tim

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