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Afm And Gas Mileage

jdg2

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jdg2 Enthusiast

jdg2

Posted
Posted

Ok I know the AFM topic has been beat half to death, but one more time. Has anyone with a 6.0 VMAX turned off AFM through a tune and actually paid attention to the gas mileage difference or if there is any differnce during normal everyday use. I am thinking about having Justin (Blackbear Perf.) disable my AFM and was curious what others have to say. I don't like the way it feels when changing from V8 to V4 mode. I currently have a tune from Justin but thinking about a few adjustments. Thanks

MS3DALE Senior Enthusiast

MS3DALE

Posted
Posted

I know a couple guys from our tune meet with 6.0/VMAX's had their AFM turned off,Give'em a little time to see this and respond.

I had Justin retune my AFM to help me out a liitle more,to where it would stay in V4 mode even longer,but instead it keeps kicking in-n-out all the time,He said he see's this in every few 6.0's he does,I'm going to send my ECM back to him and let him put it back to the stock AFM settings,as I like the AFM and I feel it helps out on my trips down South.

Stevens03 Senior Enthusiast

Stevens03

Posted
Posted

I run pretty consistent back and forth to work using cruise. Purchased gas from the same station and did a mileage check with it on,... and off. I saw no difference between the both. Mines currently off.

 

:cool:

bubba33 Enthusiast

bubba33

Posted
Posted
I know a couple guys from our tune meet with 6.0/VMAX's had their AFM turned off,Give'em a little time to see this and respond.

I had Justin retune my AFM to help me out a liitle more,to where it would stay in V4 mode even longer,but instead it keeps kicking in-n-out all the time,He said he see's this in every few 6.0's he does,I'm going to send my ECM back to him and let him put it back to the stock AFM settings,as I like the AFM and I feel it helps out on my trips down South.

 

Mine helps on my 5.3 when I am going down hill :cool:

VMax2007 Senior Enthusiast

VMax2007

Posted
Posted
I know a couple guys from our tune meet with 6.0/VMAX's had their AFM turned off,Give'em a little time to see this and respond.

I had Justin retune my AFM to help me out a liitle more,to where it would stay in V4 mode even longer,but instead it keeps kicking in-n-out all the time,He said he see's this in every few 6.0's he does,I'm going to send my ECM back to him and let him put it back to the stock AFM settings,as I like the AFM and I feel it helps out on my trips down South.

 

Mine helps on my 5.3 when I am going down hill :nono:

 

 

 

:cool::D:jester:

jdg2 Enthusiast

jdg2

Posted
  • Author
Posted

Thanks for the opinions. I was hoping for a few more VMAX owners out there but I'll take what I can get. I'm leaning towards turning off AFM. Just did not want to sacrafice to much in mileage. I am about 50/50 with city and highway driving Sounds like loss in gas mileage if any, will be very little.

huero626 Senior Enthusiast

huero626

Posted
Posted

I have had my AFM turned off in the V-Max for a while now, and I have not noticed lower gas mileage I get the same that I got when AFM was on. I never liked the concept of my truck running on four cylinders, if I wanted to save gas I would not have bought a truck. I really like my truck now that it runs on all eight cylinders all the time.

jdg2 Enthusiast

jdg2

Posted
  • Author
Posted

Anyone else? If not thanks again to those of you that did respond. I will be seeing Justin next week. Guess I will make final decision then.

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