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Discussion Starter · #1 · (Edited)
Anybody help with an issue I'm having? This is a stock LT1 with a stock tune running no cats. Before anyone suggests it, I am not allowed to add a new tune under the CMC rules.

I had the motor rebuilt over the summer and I took it to the DYNO. Power was 262rwhp 309tq. The problem is that at 4,700rpm the AF ratio drops below 10.

BTW, I'm completely clueless about this stuff.

All help is appreciated.
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