AFM/Active Fuel Management - 2008
#1
AFM/Active Fuel Management - 2008
Does anyone know if the frequency of shifting from V4 to V8 can be adjusted. Specifically when I'm on the freeway and the road has the slightest incline, I would like to stay in V4 mode longer to conserve gas.
I have the 5.3L engine.
Thanks!
I have the 5.3L engine.
Thanks!
#7
RE: AFM/Active Fuel Management - 2008
Actually there are quite a few things a tune can change including shift points, fan engage temps, etc.
As I understand it the V8 mode is set from the factory to engage at 6% throttle position, but it can be changed to 8 or even 12% to help stay in 4cyl mode on flat roads..
I'm working to verify now if there's someone in the DFW area that can do this for me. I'm also trying to verify if it will compromise my warranty in any way.
I'll report back after I get some better answers..
As I understand it the V8 mode is set from the factory to engage at 6% throttle position, but it can be changed to 8 or even 12% to help stay in 4cyl mode on flat roads..
I'm working to verify now if there's someone in the DFW area that can do this for me. I'm also trying to verify if it will compromise my warranty in any way.
I'll report back after I get some better answers..
#8
RE: AFM/Active Fuel Management - 2008
I heard the V4 only makes a difference in flat areas. The AFM does not make a huge difference in our area from what I can tell.
Guy form Pittsburgh here has a tuner on his 08 Silverado (its a trinity tuner, nice a hell! Monitors engine parameters while driving) anyway, he says with the tune and the AFM removed (turned off) he gets the same MPG as stock with the AFM on.
Guy form Pittsburgh here has a tuner on his 08 Silverado (its a trinity tuner, nice a hell! Monitors engine parameters while driving) anyway, he says with the tune and the AFM removed (turned off) he gets the same MPG as stock with the AFM on.
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