Decel popping after dyno tune

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Oct 4, 2010 | 08:00 PM

#31

davessworks

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Outstanding HDF Member

Joined: Jul 2007

Posts: 3,341

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From: Woodinville, WA

Quote:

Originally Posted by Lonewolf176

Not even that long, the de usually will be between .5 and 1.5 ms. (10 -20) engine revolutions. Even the ae table will only show maybe 2 ms. These tables are only used for transition fueling, snapping throttle open or closed. The de table is used for "popping" when you back off the throttle. The ae table works the same as an acceleator pump on a carb. The popping that occurs when you decelerate has to be dealt with on the afr table or as a last resort the ve tables. With the PC you use the 0% throttle column.

Thanks for all the help! Another thing I noticed after the dyno work (perhaps a coincidence) is that the belt needs adjusting, so this has put a temporarly damper in my testing while I wait for a 36mm wrench to come on the big brown truck . . . .