'7747 tables
02-24-2002, 09:45 PM
#1
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'7747 tables
Am I wrong in assuming that the main fuel table #2 - VE adder is added to the table #1 VE at WOT??? And can someone tell me how exactly the main spark bias constant affects timing.
TIA
TIA
02-25-2002, 11:23 AM
#2
VE1 and 2 are added together all the time.
Main spark bias is subtracted from the total timing calc. If you are using Tunercat, the main spark table reflects this subtraction. No need to change this value.
There is a timing doc over at DIY-EFI it explains the 7747 spark control. Good reading.
Main spark bias is subtracted from the total timing calc. If you are using Tunercat, the main spark table reflects this subtraction. No need to change this value.
There is a timing doc over at DIY-EFI it explains the 7747 spark control. Good reading.
02-25-2002, 11:12 PM
#3
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Thanx, and..... if the 2 VE tables are always added shouldn't I be trimming them both equally?? There must be a purpose for the second table that I haven't figured out yet.
02-27-2002, 12:05 AM
#4
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Car: Bee-Bowdy
Engine: blowd tree-fity
Transmission: sebin hunnerd
Axle/Gears: fo-tins
My guess is they did that so they could control the VE tables using different methods. You can control an entire RPM range using the VE#2 table.
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