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Lambda Targets and Engine Pressure Ratio

Understanding AFR

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Discussion and questions related to the course Understanding AFR

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Hi Guys,

I'm having a play around with road tuning my 98 WRX using engine pressure ratio as the fuel load axis.

I'm running a Haltech 1500 Elite with MAP and EMAP sensors.

How are you mapping out a target lambda table using EPR?

If it's based off the 'Estimated Map' targets, then I assume my targets would be very lean, as I wouldn't see parts of the table with richer lambda targets now.

Or is this calculated into the Emap/Imap ?

Thanks guys. Hoping someone smarter than me can help explain or clarify.

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