i look in my tune it seems that the DFCO is not active since the B3308 DFCO enable temperature is 140C
i will try to enable it will i need to tune any thing else after decreasing the temperature ?
will the car go very lean ? its running in open loop sd
Its totally known as 'tuners option'. A lot of tuners when utilizing AUTOVE for SD Tuning, disable DFCO. That is to not have the brief interruption of the fuel injectors effect the RPM/MAP wideband readings while tuning AFR.
A number of tuners after completing AUTOVE leave DFCO disabled. Probably an equal number of tuners re-enable DFCO. Its true you go 'lean' for a moment. Its also considered no-load on the engine..a total waste of fuel to spray 1/2 second of fuel while shifting..and the engine does not need it.
The bottom line is its your option. Personally on my application, I leave DFCO enabled, including during shifts (M6 DFCO Temp: 50C). As soon as you hit the throttle Commanded AFR only takes 1/16 of a second to re-engage. If you stay rich during throttle shift, most likely you hear a quick 'pop' as any unburnt fuel during shift blows out the exhaust pipe.
The bottom line is that I have not heard of anyone who can alter the AFR during a M6 shift via any tuning method other than DFCO. I would just do a search on it and make up your own mind. If you are in the active process of AUTOVE..leave it disabled..
Good luck with your search..
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