blog:escort:work:tech:afr_table [Target-Earth]

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====== Escort Tech Info - AFR/Lambda to CO ======

The AEM AFR gauge only reads AFR/Lambda, but all the Cosworth fuelling documentation works on setting CO% figures. This table is a conversion between the two, as well as the required AFR/Lambda readings for the recommended base fuelling setup for the MSD Evo chips.

**With** Lambda/closed loop control in place, the Cosworth figures as supplied by Motorsport Developments for their 320BHP Evo chip engine map state the following:

   * 1.5% CO
   * //corresponding to// 13.94 AFR/Lambda

**Without** Lambda/closed loop control in place, the Cosworth figures as supplied by Motorsport Developments for their 320BHP Evo chip engine map state the following:

   * 2.5% - 2.7% CO
   * //corresponding to// 13.56 - 13.49 AFR/Lambda

===== Conversion Table =====

{{:blog:escort:work:tech:cotoafr-page-001.jpg?791|}}

//Originally sourced from: https://www.bmw2002faq.com/forums/topic/141116-afr-to-co///