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PCM Diagnostics & Tuning
air fuel ratio?????

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air fuel ratio?????

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May 27, 2004 | 07:47 PM

#1

Bill's 02 Z-28 SS

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From: silver Spring MD

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air fuel ratio?????

Hi folks
What is the best AFR to use for LS1 with LS6 cam, ported LS6 heads (11.2:1), LTH, and 36 injectors. I keep reading numbers from 12.6 to 13.5. What should I try, I know once I get a number, it will changes depending on how well it does.
Thanks
Bill

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May 27, 2004 | 07:52 PM

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TECH Junkie

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13.1 seems to be a good all-around number. each car is different though, you have to get a dyno tune to find your optimal ratio

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May 27, 2004 | 09:13 PM

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just start with the richer (12.6:1) log A LOT!! and work it from there.

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May 28, 2004 | 07:23 AM

#4

Bill's 02 Z-28 SS

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Thanks - will try it.
Bill

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