Jump to content

Range D.F.M. disabler

Jac365
 Share

Recommended Posts

Puttnutt24 Enthusiast

Puttnutt24

Posted
Posted
On 8/24/2020 at 8:17 AM, Stephen L. Pannell said:

well, almost 2 weeks have gone by and I have driven right at 500 miles and many start stops along the way. So far the AFM/DFM unit has worked to perfection. NO codes have been thrown and  the automatic start stop is no longer a PITA. As for fuel mileage I can't tell since most of the driving has been in town. I still average around 15 mpg in town driving.  2019 High Country 6.2l 4x4 crew

Steve, which transmission do you have?

Thanks..

Rich

  • Replies 39
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

Bob Ross
Bob Ross

There are plenty of threads on this but for me I paid for a V8 and I want a V8. Besides the fact that AFM was plagued with lifter failures and oil consumption issues. The people who had their engine i

Stephen L. Pannell
Stephen L. Pannell

So I went ahead and picked up one from Summit Racing near me and plugged it in. Started and drove about 30 miles and so far it's working like it should. V8 sound all the time. With the Borla catback e

JohnTz
JohnTz

Ok thanks for the explanation. I guess I knew that it had DFM when I purchased it so I knew it was a V8 that has advanced cylinder fuel management so it doesn’t bother me and it equals better fuel mil

Coles5515 Enthusiast

Coles5515

Posted
Posted
1 hour ago, Stephen L. Pannell said:

10 speed

Steve- what version do you have? Should say on the unit. I have the 6.2 with 10 speed and cannot STAND the STUPID F’ing on off drop down cylinders etc. Damnit I bought a V8! I want all damn 8 all the time. 

Stephen L. Pannell Enthusiast

Stephen L. Pannell

Posted
Posted (edited)

Not sure but I bought it at Summit Racing in Arlington Texas. 520 mile road trip this past weekend running 75-85 and averaged 20 mpg. I now have about 1500 miles on it and all good so far.

Edited by Stephen L. Pannell
  • Like 1
Puttnutt24 Enthusiast

Puttnutt24

Posted
Posted
On 9/7/2020 at 7:27 AM, Stephen L. Pannell said:

Not sure but I bought it at Summit Racing in Arlington Texas. 520 mile road trip this past weekend running 75-85 and averaged 20 mpg. I now have about 1500 miles on it and all good so far.

Well Steve, I hope I have the same success as you. I have a '20 6.2 w/10spd and i just ordered unit RA003B, I'll be plugging it in the moment I take deliver of the truck next week..

Thanks for researching this and trying it out..

Rich

Coles5515 Enthusiast

Coles5515

Posted
Posted
5 hours ago, Puttnutt24 said:

Well Steve, I hope I have the same success as you. I have a '20 6.2 w/10spd and i just ordered unit RA003B, I'll be plugging it in the moment I take deliver of the truck next week..

Thanks for researching this and trying it out..

Rich

Please let us know your results 

  • 2 months later...
Mudcon Enthusiast

Mudcon

Posted
Posted

I beta tested them also, mine is a 10 speed and I had to stop using it. Made my transmission do weird shifts.

bjr2020 6.2 Enthusiast

bjr2020 6.2

Posted
Posted (edited)
On 12/10/2020 at 1:25 PM, Mudcon said:

I beta tested them also, mine is a 10 speed and I had to stop using it. Made my transmission do weird shifts.

Same here it wasn’t so much the weird shifts with mine it just caused my tranny to shift odd on the first startup of the day. The biggest issue was with my truck a 20 6.2 10 speed tb custom that the range does not deactivate all the dfm modes it does disable dfm a majority of the time but at cruising speed and certain gears you could hear that dfm was not disabled in all circumstances. I have a muffler delete so you could def tell. I talked with range and sent it back and bought the pulsar lt which does indeed disable dfm. The range seems to work flawlessly on most setups besides the 6.2 10 speed and possibly the 5.3 10 speed from what I’ve heard.Just my 2 cents.

Edited by bjr2020 6.2
Mudcon Enthusiast

Mudcon

Posted
Posted
On 12/11/2020 at 10:47 PM, bjr2020 6.2 said:

Same here it wasn’t so much the weird shifts with mine it just caused my tranny to shift odd on the first startup of the day. The biggest issue was with my truck a 20 6.2 10 speed tb custom that the range does not deactivate all the dfm modes it does disable dfm a majority of the time but at cruising speed and certain gears you could hear that dfm was not disabled in all circumstances. I have a muffler delete so you could def tell. I talked with range and sent it back and bought the pulsar lt which does indeed disable dfm. The range seems to work flawlessly on most setups besides the 6.2 10 speed and possibly the 5.3 10 speed from what I’ve heard.Just my 2 cents.

So the pulsar  is flawless with your 6.2 and 10 speed?    Did if affect your fuel milage?  The range reduced my fuel milage about 3-4mpg.

josh_range New Member

josh_range

Posted
Posted
On 12/11/2020 at 9:47 PM, bjr2020 6.2 said:

Same here it wasn’t so much the weird shifts with mine it just caused my tranny to shift odd on the first startup of the day. The biggest issue was with my truck a 20 6.2 10 speed tb custom that the range does not deactivate all the dfm modes it does disable dfm a majority of the time but at cruising speed and certain gears you could hear that dfm was not disabled in all circumstances. I have a muffler delete so you could def tell. I talked with range and sent it back and bought the pulsar lt which does indeed disable dfm. The range seems to work flawlessly on most setups besides the 6.2 10 speed and possibly the 5.3 10 speed from what I’ve heard.Just my 2 cents.

Jumping in to clarify on what was said here. Our AFM/DFM Disabler does not and will not officially work for 2019+ 6.2 10-speed trucks. Some customers have ran our Disabler on their 6.2 10-speed trucks without any issues, and some reported issues with fluctuation in revs when at cruising speeds. This is the result of coding limitations that are posed by the module accessing the ECU via OBD port, hence why it can be disabled successfully with the Pulsar LT working as an inline module. 

 

As for Mudcon's question about fuel economy, it completely depends on your driving style. Some users see no change, some see better MPGs, some see worse. With the increased throttle response that this product provides, it's pretty easy to become a leadfoot. ?

  • 3 weeks later...
one_day_you_may Enthusiast

one_day_you_may

Posted
Posted (edited)

I’m on my second Range device on a 20 5.3 and a few times a week the auto start stop will happen with the device plugged in. Not sure why. I unplug the unit and plug it back in, it doesn’t do it again for a day or so then it happens again. Really strange since this has happened with 2 devices. 

Edited by one_day_you_may
Tigerwitha88 Enthusiast

Tigerwitha88

Posted
Posted
On 12/29/2020 at 9:25 PM, one_day_you_may said:

I’m on my second Range device on a 20 5.3 and a few times a week the auto start stop will happen with the device plugged in. Not sure why. I unplug the unit and plug it back in, it doesn’t do it again for a day or so then it happens again. Really strange since this has happened with 2 devices. 

Mine does same. On average once every couple weeks and always when engine not fully warm and the first stop, wont do it again after. I just leave it in. Called range and they mentioned it may happen every now and then but is still deactivating the DFM. 

Gwill30 Enthusiast

Gwill30

Posted
Posted

Is the pulsar LT the only option available for a 21 6.2 10speed?

 

I really just want to disable the DFM and don't need the other bells and whistles for an extra 250.00

  • 6 months later...
mjsitek New Member

mjsitek

Posted
Posted

Purchased the Range model RA003R AFM / DFM device for my 2021 Silverado with the 5.3L V8 and 8-speed transmission. The device did effectively deactivate the start / stop function, however, DFM was still active when driving under 40 MPH. I put a rough country exhaust system on the truck, and you can audibly hear the drone when it drops cylinders. You can also feel the added hesitation when it switches between DFM and full V8 mode. I sent it back to Range and they exchanged the module for a new one. After plugging in the replacement module, it works only every other time I start the vehicle. Called customer service again and they have no explanation, except in rare occasions it just won't work on your vehicle. They did offer to sell me the new $500 Pulsar module instead (at full price, of course). Not happy with this purchase, or the support from Range. Wondering if anyone else has had a similar experience? I will never purchase another product from this company.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • Chuck FB
      Tire psi

      By Chuck FB · Posted

      I will admit I haven't experimented much with pressure drops beyond the numbers I put in and part of that is that the numbers I used are fairly low and then found out it would trigger regardless at that 35 psi. Having said that I had tried before had changed the placard pressures and being that I have a 1 ton set to 80 on the placard for the rear I believe it triggered close to 60, the front I don't recall now for sure but thought maybe it could get close to 45 from that factory 60 placard pressure. So I never did figure out if it was a number of psi from placard pressure to the alarm or a percentage of the total placard number as some figured it was like a 25% drop from placard pressure would trigger it. So as to try and answer your question, I believe I set the placard pressure on the front to 47 or so and while I run the front tires at 40, they have dipped below that some if its colder and I haven't put "winter air" in yet and never once have had the front alarm go off. I would say that the answer your looking for is no, that if you set your placard pressure to 45, you have a certain amount of room to drop below that pressure before the alarm will go off.    The pressures you decide to run in your truck, that ends up being what makes sense to you based on what your carrying in your truck or if towing, then have to bump them back up to something that will carry the load in the rear and the fronts typically left at the same pressure. It all comes down to that chart I put the link to and using an accurate roadside scale to be your guide, both unloaded and then loaded to know your minimum safe pressures.    I just wish GM would allow a person to change the readings for the tire pressures to the English system of pounds as I have to look at that goofy metric reading that will never ever jive in my head and will go over and change it just to figure out what they are if need be and then change it back. 
    • TrueBlue
      No Software Updates - Old Build

      By TrueBlue · Posted

      That part I understand, that the dealer can do it. But I'm not understanding why updates that were available to the truck since it left the factory, or the dealership originally, would not still be available to it without dealer intervention.   I'm thinking along the lines of recalls. They stay available until they are completed, regardless of whether they are in warranty or not, or in the hands of the original owner or not. Why not updates as well, especially since some of those can be safety related also?
    • jgaudet99
      Tire psi

      By jgaudet99 · Posted

      That's good to know, but I don't think I'll even be running them under 45 in the rear  unless it's on the sand or something but will only be for a short distance anyways!    I didn't read all the instructions in the booklet yet, but do you know let's say I set the rear psi on the placard to 45, will the warning light come on soon as it drops under 45 or is there a percentage it has to drop from the set value before the warning light is triggered?
    • newdude
      Would this CV Shaft be bad?

      By newdude · Posted

      That's bad.  Like, its probably destroying the stub axle the CV slides into.   Do you have a proper lift installed with differential lowering brackets?  Did you install AT4/Trail Boss factory CV axles?  
    • PunchT37
      Would this CV Shaft be bad?

      By PunchT37 · Posted

      Hot? New Jersey? Today? I was working on my old 2000 Silverado 1500 today. Believe me, it was boiling hot today. As it has been.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...