I have a 2007 Suburban. I also have EFI Live with the V2 programmer and all the latest updates. Am I able to modify the Active Fuel Mgt. portion of my program? It's very difficult for the motor to stay in 4 cylinder mod unless I'm coasting or going downhill. Can I make it stay in 4 cylinder mode longer with EFI Live?

 

This should be a hot topic for all those running new body style trucks and SUVs. Anyone?

 

We've had roughly 3 dozen DOD enable/disable parameters for quite a while now.

 

Bob, have you played with the parameters to get the AFM to stay engaged longer? For instance: In the vacuum thresholds, would you raise the kPa figures in the DoD enable vac table or lower them to allow AFM to engage at higher kPa readings? Then in the DoD disable vac table, would your raise or lower the kPa figures to allow the AFM to stay engaged longer? Thanks!

 

There are alot of different variables that can keep you out of DOD mode...there is a max in dod threshold, rpm min/max, vac min/max, tps min/max, etc that all need to be met & kept in check.

Thanks,
Bob












PS: Its Bill

 

Sorry about the name flub Bill

I understand about meeting all the other thresholds you mentioned. Other than a few changes to the TPS parameters, it looks like it all comes down to manipulating the vac min/max tables. This is where I was looking for your comments on which way to skew the vac tables to allow AFM mode to become engaged at higher kPa readings and stay there. Thanks.