a/f based on length of run

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a/f based on length of run Empty a/f based on length of run

Post  racinghabbit on July 3rd 2019, 1:02 am

I had a motor dyno tuned. Its a touch lean on a 10 second pull.

Now say the racing i do only takes 5 seconds per pass... how does that affect the air fuel? does it get more lean?


Also does cooling your fuel change the air fuel ? lean or rich

thanks.
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a/f based on length of run Empty Re: a/f based on length of run

Post  rmcomprandy on July 3rd 2019, 9:56 am

racinghabbit wrote:I had a motor dyno tuned. Its a touch lean on a 10 second pull.

Now say the racing i do only takes 5 seconds per pass... how does that affect the air fuel? does it get more lean?


Also does cooling your fuel change the air fuel ? lean or rich

thanks.

Unless the dyno is not capable of supplying enough fuel or the needle & seats have to small of an orifice, the length of the dyno run does not matter for air/fuel ratio.

The specific engine RPM and observed torque output are the relevant factors.

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Post  racinghabbit on July 3rd 2019, 1:32 pm

what about the temp of the fuel?
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