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Old 10-12-2012, 04:44 AM   #9 (permalink)
AndrzejM
Master EcoModder
 
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Join Date: Oct 2011
Location: Poland
Posts: 840

Berta - '97 BMW 318 tds Compact
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You may go for somethink like this:
(c)koda Felicia - praktyczne porady użytkownika

This is in Polsh so if you have any trouble with google translate it just let me know.

Here is a schematics for this unit (fairy simple)


The operation of this is simple 3 LEDs are signaling Lean, Normal and Rich mode. So I think it suits the need to know when engine is working in lean burn mode best.
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Quote:
Gerhard Plattner: "The best attitude is to consider fuel saving a kind of sport. Everybody who has enough money for a strong car, can drive fast and hit the pedal. But saving fuel requires concentration, self-control and cleverness. It's a challenge with the nice effect of saving you money that you can use for other more important things."
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