Miata Turbo Forum - Boost cars, acquire cats.

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-   -   Quick question (https://www.miataturbo.net/megasquirt-18/quick-question-8632/)

richyvrlimited 04-01-2007 03:51 PM

Quick question
 
Just want to double check a setting in the engine constants page, as I've not touched it in ages and have forgotton :( when calculating the req fuel number, is the AFR target 14 or 14.7?

thanks!

cjernigan 04-01-2007 04:25 PM

14.7 i asked the same thing earlier.

magnamx-5 04-01-2007 04:48 PM

though not in boost there you want it to be 13 or less to 1

cjernigan 04-01-2007 04:51 PM

Of course, but the req fuel has to be calculated with the stoich value.
Fuel map should compensate when under boost.

Al Hounos 04-01-2007 05:18 PM

that is really just how you tell the ms what kind of fuel you are using.

cjernigan 04-01-2007 05:22 PM

That's right, for ethanol it would be like ~9 i suppose. The 14.7 lets MS know you're using gasoline.


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