Boost fueling tables

[limited cv8r]

Why dont we have any boost fueling tables? B3647 for example stops at 105kpa. What can I use once into boost to control my fuel apart from fudging the boost VE table. Could B3647 be extended to go into boost, or another table added for boost fueling?

[johnv]

you can use B3647 and set it in the last columb to something like 12.2 afr, then bring in PE at say 4 psi,125 kpa with B3613, PE set to say 11.8 and maybe tapering a little richer at high rpm.

This will give a better transition of fueling as you get into boost.

[GMPX]

You can also just change the VE numbers if the AFR is not what you want in boost.

[GMPX]

Stick to the COS section, I answered in there, multiple posts only serves to confuse :)

[limited cv8r]

I understand we can change the numbers in the boost VE table to get correct desired AFR's. It is just harder to autotune if the last commanded AFR in B3647 isnt what you want in boost,also if you do not use PE you can not transition into boost either,unless you spend time fudging the boost VE numbers to get your desired AFR. If we had boost fueling we could still then use BEN's to tune with.

[5.7ute]

You could make a map in excel to make it easier. Just place the commanded values you want in the table. Add your actual AFR data to another & do the actual/commanded for a third map.
Not much use if you dont have excel though.