PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Timing and afr

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Old May 20, 2011 | 05:06 PM
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Default Timing and afr

This cars timing was set as 60. And the afr was at 14.5. Was that a nitrous tune? What is stock timing and afr?
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Old May 20, 2011 | 07:53 PM
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I don't think so. How do you know? No! It is not just one value.
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Old May 20, 2011 | 08:38 PM
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Typical nitrous timing while on the spray on a vette is ballpark 15 to 25 depending on the size of the shot.

AFR on nitrous should be 11.5 to avoid turning the big pieces into little pieces.
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Old May 23, 2011 | 06:23 PM
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This tuner on the car has value bars and that is what they are set to. I guess they may be limits but that is the setting. This car burns oil and only has 91k so I imagine that the rings are burnt due to nitro
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Old May 23, 2011 | 06:33 PM
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what are you looking at that shows 60* and 14.5 afr? have you taken any data logs? look at your af sensors under wot what are they and what is the timing and KR*?
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