Jump to content

Afm Again


Recommended Posts

Posted

Those of you that have turned off AFM , are you still glad you did and are you still saying that gas mileage has not really changed? Are there still some people out there that wish it was turned off. I am still on the fence about it, but I hate that 8 to 4 and 4 to 8 chug/surge while cruising. I am thinking either AFM has to go or I will have to go back to stock modules where AFM is smooth but everything else sucks.

Posted

I have mine turned off now and it feels a lot smoother now...As for mileage, still on the first tank after the tune and I'm having trouble staying out of WOT haha...

Posted

I plan on having Justin turn mine off when he comes back to my place in Sept. If I had a different type of driving environment I may keep it. But there is soooo much stop and go stuff around here that the benefits I get from it are about Zero. Most of my long highway trips are with a trailer when I don't want the AFM anyway.

 

I don't dislike AFM, but I don't get a lot of benefit from it daily and I don't want it on while towing. Plus, I plan on eventually putting exhaust on my truck and I don't want to worry about the resonance during 4 cylinder mode.

 

It has helped me on a few long highway trips. I in all honesty have got 21mpg on a 150 mile trip driving 65-70mph. That is not the norm and I'm sure the stars were aligned just right, but I did. My AFM was on a lot during that trip. So it can help, but for me it really doesn't do much for 95% of my driving.

Posted
I plan on having Justin turn mine off when he comes back to my place in Sept. If I had a different type of driving environment I may keep it. But there is soooo much stop and go stuff around here that the benefits I get from it are about Zero. Most of my long highway trips are with a trailer when I don't want the AFM anyway.

 

I don't dislike AFM, but I don't get a lot of benefit from it daily and I don't want it on while towing. Plus, I plan on eventually putting exhaust on my truck and I don't want to worry about the resonance during 4 cylinder mode.

 

It has helped me on a few long highway trips. I in all honesty have got 21mpg on a 150 mile trip driving 65-70mph. That is not the norm and I'm sure the stars were aligned just right, but I did. My AFM was on a lot during that trip. So it can help, but for me it really doesn't do much for 95% of my driving.

 

When does he return? is it for another tune session?

Posted
I plan on having Justin turn mine off when he comes back to my place in Sept. If I had a different type of driving environment I may keep it. But there is soooo much stop and go stuff around here that the benefits I get from it are about Zero. Most of my long highway trips are with a trailer when I don't want the AFM anyway.

 

I don't dislike AFM, but I don't get a lot of benefit from it daily and I don't want it on while towing. Plus, I plan on eventually putting exhaust on my truck and I don't want to worry about the resonance during 4 cylinder mode.

 

It has helped me on a few long highway trips. I in all honesty have got 21mpg on a 150 mile trip driving 65-70mph. That is not the norm and I'm sure the stars were aligned just right, but I did. My AFM was on a lot during that trip. So it can help, but for me it really doesn't do much for 95% of my driving.

 

When does he return? is it for another tune session?

 

 

Yep, another tune session. He will be back Sept 4-6th.

Posted
It's been off since I first got my Black Bear tune, I don't miss it at all.

 

 

+1

 

And I have seen exactly ZERO drop in MPGs.

 

OFF WITH IT!!!

Posted

I did a mileage check on/off and didn't see any difference, so it's been off for more than a year now. No issues and glad it's off.

Posted

the afm in my old 07 max and my old 08 5.3 never bothered me......in the 09 its really getting on my nerves so I think I may turn it off in october

Posted

Thanks for the input guys. I am in the process of discusing all my options with Justin now. He has done a great job on the tune and his customer service is second to none. I just hate that AFM transition. He has told me he can smooth that out but I would have to sacrafice some of the benefits of the tune. So I'm thinking, why not just turn it off, especially since there seems to be almost no loss in MPGs. Was looking for opinions here and got some. Thanks Again.

Posted

I REALLY wish we had the option within DIC to just turn if off ourselves.

Posted

J man67- on a related topic- I'm sure I missed it on another thread, but what ever happened with your ticking lifter situation? Went away or got replaced?

Posted
Those of you that have turned off AFM , are you still glad you did and are you still saying that gas mileage has not really changed? Are there still some people out there that wish it was turned off. I am still on the fence about it, but I hate that 8 to 4 and 4 to 8 chug/surge while cruising. I am thinking either AFM has to go or I will have to go back to stock modules where AFM is smooth but everything else sucks.

 

Get rid of the AFM....You won't regret it!

Its just useless on these trucks.

Archived

This topic is now archived and is closed to further replies.

  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Forum Statistics

    250.6k
    Total Topics
    2.7m
    Total Posts
  • Member Statistics

    343,007
    Total Members
    8,960
    Most Online
    Brendan C
    Newest Member
    Brendan C
    Joined
  • Who's Online   4 Members, 1 Anonymous, 1,194 Guests (See full list)

  • Latest Articles

  • Posts

    • Thanks for posting, I'm sure it will help someone
    • New to diesel trucks. I happened to find my oil cooler leaking oil externally with only 4,000 miles on the truck. I didn’t realize this was an issue until I started researching it. Dealer is going to replace it under warranty but I’m wondering if there’s anything GM is working on to fix this issue. I’ve heard the oil filter used is the same as they use on their V6 motors and that’s what is causing the problems. Should I switch to a bigger filter or keep using the OEM recommended? 
    • So, GMCustomerService:  Judging by the Update History pictured above, is this truck missing any updates that it actually needs. If it's just for the infotainment system, the radio is working fine and no trouble with SeriusXM. and Android Auto is working fine wirelessly with my phone. Some months ago, an update notice was sent to my truck. I approved the update and it finished saying that the update was successful, but it seems that whatever that update was, it didn't actually get installed - at least not if I'm to go by the Update History shown above.   So, again, are there any updates that this truck really should have? I've checked with my dealer but they're reluctant or commit to anything and if I want them to check, they require a $200.00 fee just to check it out and then I'd have to pay for the actual update(s).    Ignorance is bliss, and if none of the updates goes to fixing any mechanical discrepancies, I'll just leave things as is.  
    • Hey everyone, I recently had an issue with my 07 2500HD GMT900. My DRL’s stay on at all times. Right front turn and right mirror turn signal indicator stay on solid at all times. By “at all times” I mean the only way to make them go off is disconnecting the battery. I tore the headlight assemblies out, tried disconnecting the harnesses to eliminate bad wiring at the harness, I unplugged the headlight switch, no change and the mirror turn signal still stayed on. My first thoughts were : Bad bulb and/or socket somewhere, under hood fuse panel bad, bcm bad, tail light or trailer wiring problem, or some random short to power in the harness.  Possibly a bad ground but unlikely. I had a big clue in the fuse panel, it had a burnt smell. I started pulling every fuse that had to do with DRL or right turn/park lamp. Nothing made the right directional turn off but pulling the DRL2 fuse made the DRL’s go out.  After studying wiring diagrams, I found that both problems had that fuse panel in common, the bcm also controls both problems but knowing the fuse panel had a burnt smell I removed and disassembled the fuse panel and found a little corrosion on the printed circuit board.  I ordered a new fuse panel from Amazon for like $260. When it arrived I installed it, and put everything back together, the problem was fixed. I figured the fuse panel needed to be replaced anyway so that was a logical place to start. Hopefully this story helps someone in the future. Regretfully I didn’t scan for codes before I did everything.
    • That stinks. I’m sitting on the side of the road right now with the same issue. Never had an issue before taking it in for the ground strap recall. Now I’m outside of warranty and they’ll probably want $200 just to diagnose what they already “fixed”. 
  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...