What is a safe NA AFR?

Originally Posted by Chuck33079 The number for ideal power is in ideal conditions. You need to leave enough headroom for gas, IAT and so on. From the other thread. And

		Nissan 370Z Forum > Nissan 370Z Tech Area > Engine & Drivetrain > Tuning
What is a safe NA AFR?

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04-17-2014, 07:50 AM

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Chuck33079

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Quote:

Originally Posted by Chuck33079

The number for ideal power is in ideal conditions. You need to leave enough headroom for gas, IAT and so on.

From the other thread. And your graph shows "ideal" down to 11.5 or so. Adding fuel adds safety. A too lean AFR under load is what's going to kill your motor. Going too lean will cost you power since you'll knock, and the ECU will pull timing out.

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