EEC-IV AFR at open loop

Anything about Ford EEC tuning. TwEECer and Moates questions dominate, but there's some SCT and OBD-II knowledge too.

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midnightman
Gear Head
Posts: 3
Joined: Thu Feb 22, 2018 6:08 am

EEC-IV AFR at open loop

Post by midnightman » Thu May 31, 2018 3:30 pm

Guys quick question.

how EEC-IV calculate fuel in open loop to get desired AFR?

dont think about learned adaptives....what is "basic" for eec?

Thanks!

85GT
Tuning Addict
Posts: 819
Joined: Mon Apr 19, 2010 2:32 pm
Location: NYC

Re: EEC-IV AFR at open loop

Post by 85GT » Sun Jun 03, 2018 12:15 pm

The eec will calculate how much fuel is needed based on the current air going in (MAF or VE table) and what the desired AFR is (open loop table). It will be accurate only once the fuel is dialed in.
85GT, 302 w/Dart Windsor Jr heads, Crane 2030 equiv. Performer 5.0, 75mm TB, 88mm slot MAF, 34lbs injectors, BBK shorties, 5spd converted to 4R70W with Baumann controller, 9" rear w/3.25s
A9L running A9P bin via Quarterhorse w/LC-1 WB

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