Lean burn indicator

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More than a few EcoModders are big fans of Honda's very efficient lean burn engines, the miserly 1992-1995 Civic VX in particular.

The key to driving one of these engines efficiently, not surprisingly, is keeping them in lean burn mode. Some drivers can "feel" the engine entering and exiting lean burn, but for those who are new at it, or whose butt-o-meters aren't as sensitive, instrumentation is your friend.

EM moderator TomO has written a how-to for using a digital multimeter to monitor lean burn. He's also possibly working on an LED indicator.

Lean burn can also be set up on other standard engines by fooling the ECU by modifying the O2 sensor output.

Instructions for mod

Information required: How do people perform this modification, pictures, problems, what to look out for
Information required: A listing for different ways to do this if its different on different types of cars

User experiences

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User data
User Name Car Make, Model, Year Cost of Mod Time to Perform Mod MPG Before Mod MPG After Mod MPG improvement guess Instruction Link
Example Data Saand Example Data Mazda, 626, 1991 Example Data $5 USD Example Data 1 Hour Example Data 27.2 Example Data 29.8 User mod detail or measurement detailed data

Problems / Consequences of mod


Forum thread links

Article: Lean burn on an otherwise stock engine (testing Acura RSX K-Series engine)

External links