i have a aggresively tuned vafc2 and i used to switch back and forth between setups and always run off the same tune. well long story short i ended up selling most of my second setup and now i only have my 70mm headerback and my stock exhaust/cat. so my question is:

can i somehow just adjust the throttle setting so that the vafc never even modifies the AFR signals at all. i have it set a like 99% hi and 0% low so it only interfers under WOT and thus never loses its tune. so if i just set the high value to 0% wont it never apply the tune at all? thus do the same thing as unplugging the unit? or no?

 

If you set all the corrections to zero, then the VAFC is not doing anything since it won't be sending any correction signals.

 

thats what i figured. its not going to lose its settings then will it? forgive me, im OCD, that and i paid 200 bucks on dyno tuning the damn thing.

 

You can always copy down the current tuned corrections so you can re-enter later.

Probably a good thing to do anyway. If anyone steals your VAFC, you can replace it pretty cheaply...but if you have to re-tune because you don't have the correction tables copied someplace, then the cost suddenly doubles.