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Practical Standalone Tuning

Relevant Module: Worked Examples > MaxxECU > Step 9: Full Power Tuning

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Discussion and questions related to the course Practical Standalone Tuning

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friend I have a question about how the maxxecu ecu shows the duty injector, I am working on a 2jz with 2200cc injectors and at 13 psi of boost (fuel duty primary 90%) it cannot be that at just 13 psi I am without injectors

What is the injector pulse width and engine RPM where you observe 90% duty cycle? What was your fuel pressure at the point?

What injectors are you using and which fuel? are you monitoring fuel pressure?

I've seen a lot of people try and run the CNG 2200cc injectors with alcohol and come up with major flow issues, they are not even designed for petrol.

Someone actually shared (what I think is) your post with me over on Facebook - from the screenshot you shared over there I'd think there is something fundamentally wrong with your setup - mechanically, in software, or both.

If this is the same person/setup you're commanding 17.851ms of injector, adding 9.4% of lambda correction, and 135% VE at only 14.5 psi, .769 lambda, and 6200 RPM. Unless this is a whacky fuel or something these numbers don't add up - and really at those pulsewidths I'd say the ECU is probably accurate with regards to its duty.

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