Miata Turbo Forum - Boost cars, acquire cats.
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Miata Turbo Forum - Boost cars, acquire cats. (https://www.miataturbo.net/)
-   MEGAsquirt (https://www.miataturbo.net/megasquirt-18/)
-   -   Spartan 3 ADV AFR flat spots (https://www.miataturbo.net/megasquirt-18/spartan-3-adv-afr-flat-spots-109085/)

Reverant 04-04-2024 02:05 AM
Originally Posted by eviking (Post 1648459)
I wonder if the new 1.6 firmware would have helped at all?
The FW 1.6 announcement states "Add built-in support for Spartan3 CAN wideband."
https://www.msextra.com/forums/viewtopic.php?t=79196
No, this is clearly a problem with the way the signal is filtered. Not with the way it is transmitted. Getting it through CAN vs the analog input wouldn't change anything.

elp 04-04-2024 09:47 AM
Originally Posted by Rrrracer (Post 1648453)
@elp any particular reason you didn't want to run with it set at Perf=1?

I have a client's car doing the same thing, only the duration of the flat spots is much more random and less duration, maybe a max of 2 sec.
@Rrrracer I did try perf=1, The flat/dead spots were smaller, but still present. Even when you could see obvious changes to the pulse width the AFR would remain flat, albeit not as long as it was with perf=0.


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