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Fuel / Temperature Enrichment | THE ORIGINAL VR4 Clone™ ECU

Fuel / Temperature Enrichment

There are a number of temperature enrichment factors to the base fuel table. One factor is coolant temp. This is the warm up enrichment table the ECU applies to the mixture. I highly recommend at least reducing the values in this table if you are installing larger injectors.

Example: If you’re running 680s, reduce the trim by half since they are 2x the size of stock injectors.

5xDIh

Haven’t ever really needed to adjust the bottom two tables. The load based correction is in place to eliminate enrichment during warmup at high loads so you don’t run too rich during high acceleration.

The air temp table is just an overall fuel correction. Since cool air is denser, more fuel is needed to maintain the same AFR.

Discussion Here: Disassembly: Fuel Tables

This page was posted on Tuesday, April 16th, 2013 at 11:08 pm by bfarnam and last modified on Friday, April 19th, 2013 at 11:32 pm by bfarnam

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