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Warning: I ran 12 psi on stock injectors for 3 weeks and the logs were fine, which scared me more
I got my wideband installed last month (finally, after it sat in the box for 6 weeks) and started logging my daily commute. Pulled the logs on a Sunday and saw my injector duty cycle hitting 94% at 5,800 rpm on 12 psi, which I thought was impossible on stock 440cc injectors. Turns out the factory tune runs pig rich up top, around 10.8 AFR, so there was just enough headroom hiding in there. It felt like a free pass but also like the engine was quietly using up all its luck at once. Anyone else seen duty cycle numbers that high on a stock fuel system, and did you swap injectors right away or ride it out a bit longer?
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victor_jenkins25d ago
94% duty cycle is wild. That pig rich factory tune is the only thing keeping those pistons alive. Swap injectors before the weather turns cold.
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