Haltech R34 Gt-t Platinum Pro

I'm Jerry from Hong Kong. Forgive me if I ask a stupid question. I have some trouble figuring out how to arrive at the output value based in RPM and Load-Fuel. Is there a standard formula for this?

Jerry,

Sorry I'm not 100% sure if I understand you question.

Are you wanting to know how you access the zone you have circled at 500rpm and 0 g/cyl with the engine.

This zone being at 500rpm (typically below idle on a R34) and 0 g/cyl (no air flow) can not be accessed by the engine and is what we call a "Dead zone"

Usually I will just copy the next row over to this row to keep the fuel map looking tidy and smooth.

Hope this helps?

Hi Chris, Thanks your for reply. I want to know how to calculate the output value is 0.75 at zone being at 500rpm and 0g/cyl. thanks Chris again.

You're currently using the MAF sensor as the main load input and hence the ECU is measuring mass airflow. You're also using the 'Lambda Correction' tuning mode where the base fuel table is a table of correction factors the ECU will apply to the injection output to achieve your desired target.

Based on the measured mass airflow, injector flow, and target AFR tables, the ECU will calculate a pulse width to apply to the injector in order to achieve the target AFR. Ideally if the injectors are correctly characterised and the MAF calibration is accurate, no correction would be necessary. In reality though this may not work out to be perfect and the base fuel table can be used to correct the measured AFR until it matches whatever is in your target table. Values less than 1.00 will reduce fuel delivery while values greater than 1.00 will increase fuel delivery.

Thanks Simon