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Old 02-27-2018, 10:43 AM   #11 (permalink)
rmay635703
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Join Date: Jun 2008
Location: Somewhere in WI
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Quote:
Originally Posted by 19bonestock88 View Post
Dual EFIE? I don’t follow...
Not sure what your asking

Modern cars have 2 o2 sensors a decent EFIE on each allows you to trick the car into thinking you are running rich and lean out.

A decent EFIE is variable and allows you to intercept your o2 sensor signal and set your AFR after you are up to cruising speed.

However a narrow band car looses resolution slightly above 15:1 AFR so you can’t normally get a car to run AFRs much above 15.2:1 with an EFIE

And no I’m not advertising, you can build an EFIE with less than $5 of parts there isn’t much to one.

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