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AFR FOR RACING FUELS

Understanding AFR

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Discussion and questions related to the course Understanding AFR

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Hello there,

I have some question about some racing fuel. I would like to know what AFR to choose for VP Q16 and for VP IMPORT at idle cruise, mid range and at full power. The engine is a turbocharged and my target is to reach at 45psi boost.

Keep all the good work guys.

There is a thread in the general forum that covers this topic in some detail. You can find it here: https://www.hpacademy.com/forum/general-tuning-discussion/show/tuning-with-c16#post3807

In general on these high quality race fuels you can safely run leaner than for example pump gas. This is because the very high octane rating of the fuel makes them much less susceptible to knock and hence you don't require so much additional fuel to help cool the combustion charge.

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