Bought a Range AFM disabler

dieselfan1 · April 25, 2019

On 4/10/2019 at 4:10 PM, dieselfan1 said:

I've had my Range for about 250 miles now and I like it. Totally took care of the drone I got in V4 at 1500 rpm since I installed the Borla S Type catback exhaust system.

I don't notice any difference in mpg's yet but I haven't driven enough yet.

After around 750 miles of installing the Borla S Type catback exhaust system and the Range disabler my gas mileage has increased by 1.3 MPG'S. All of my driving is in town too. I think the increase is more due to the new exhaust though. I haven't really been racing around to listen to it much either .

Heading up to the cabin on Sunday to put the dock in so I'm going to check and see how much better it is on the highway. It's about 100 miles north of where I live and the speed limit is mostly 60mph so we'll see what happens .

TheGreatOne · April 26, 2019

9 hours ago, dieselfan1 said:

After around 750 miles of installing the Borla S Type catback exhaust system and the Range disabler my gas mileage has increased by 1.3 MPG'S. All of my driving is in town too. I think the increase is more due to the new exhaust though. I haven't really been racing around to listen to it much either .

Heading up to the cabin on Sunday to put the dock in so I'm going to check and see how much better it is on the highway. It's about 100 miles north of where I live and the speed limit is mostly 60mph so we'll see what happens .

Thanks for sharing that info

Bob2C · June 28, 2019

Just installed one in my 2018 Tahoe. No CEL, better throttle response. Overall truck feels great. I am running the latest version 8.6 R1

Baytrucker · July 4, 2019

I just bought one and plugged it into my 2017 GMC Sierra 1500, EcoTec V8 5.3.

I've driven it for a day and can already see the improvement. I already knew what to expect, as I have been driving mostly in M5 for the past few weeks.

I've owned the truck since new, and the subtle "hiccup" when moving into V4 at low speeds has always bothered me. The hesitation when you hit the throttle and move back to V8 also annoyed me. Mostly, it was in certain low-speed situations (parking lots, and particular intersections) where the typical conditions would cause the AFM to get confused, and in turn, cause the transmission to get confused. It would cycle back and forth between V4 and V8 at intervals of less than 30 seconds and cause the transmission to shift back and forth. Its subtle, but noticeable enough to be annoying. If you have passengers, you can see their heads snap gently back and forth as the truck has its moment of schizophrenia and the inertia of the truck shifts. With M5, and now with the Range device, most of these problems have gone away and the truck is smoother than I ever though it would be.

On the highway, the AFM never bothered me. In fact at high speeds, I never noticed it. I might pull the Range out for longer trips and let AFM do its thing.

I've never experienced oil consumption issues. However, I would like to tune up my idle speed a bit. It surges when the engine is warm, and idling below 500 RPM (when the engine is warm). This really annoys me. For this reason, I'll probably do a full tune once my powertrain warranty is up.

I'll report back in a few months.

stevenstark711 · July 30, 2019

Had my range afm dissabler in 3 months now,oil consumption has dropped drastically,1500miles on oil ch and still showing full on dipstick

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Prospect62 · February 1, 2020

I'd be curious to hear from you guys who have had one in on a 2015+ truck for awhile and how the Range is working.

I'm thinking about getting one for my 2016 Suburban to avoid AFM related lifter issues down the road.

WHITESSTOWPIG · February 2, 2020

Had mine for a few years now and it is definitely worth the price if a tuner is not an option because of warranty.Cylinder deactivation can be really annoying to drive with IMO.One thing about the modules though is they discharge the battery ever so slightly anytime they are left plugged in.That being said even after having the truck sit weeks at a time with the module in it never gave me a starting problem until 3 years in when the battery would no longer take a charge.Warranty covered the battery ofcourse and I still use and love the module but its just something to be aware of if your vehicle sits for long periods of time

Bob2C · February 2, 2020

Just came back from being away with the truck sitting a week in cold weather. No problems starting. Range was plugged in all along. Great purchase.

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dieselfan1 · February 2, 2020

I've had mine in my 2018 5.3 for 18,000 miles now. Works as advertised. All V8 all the time. Mileage unaffected if anything it got slightly better.

The afm is a waste if you ask me.

Edited February 2, 2020 by dieselfan1

Prospect62 · February 2, 2020

Thanks for the responses!

RustyTrombone24 · December 24, 2020

On 3/3/2018 at 12:34 PM, Donstar said:

I often wonder this same thing. I have read a lot on this topic and have been driving with AFM for the past 9 years. If it is creating an annoying ride then it needs repair not elimination. You can see when your truck switches to V4 but but I seriously questions the complaints about feel and sound. We should start embracing cylinder deactivation and start/stop technology because it isn't going away. I personally think it is brilliant to have cylinders operating when needed. No sense leaving the lights on in rooms you're not using!

k well i didnt buy a 60 thousand dollar full size truck for it to run on 4 cylinders.

Donstar · December 24, 2020

5 hours ago, RustyTrombone24 said:

k well i didnt buy a 60 thousand dollar full size truck for it to run on 4 cylinders.

Welcome to this forum! You will find a lot of useful information on this site!. You have responded to an older thread but there may be new interest in this topic from others. My point of view is that when I spend 60K on a vehicle, I would expect it to have the latest technologies. My current truck is a V6 and it spends a lot of time in V4. I've pulled travel trailers and carried heavy loads during my past five years of ownership. Unlike the vegetable juice commercial, I've never said, "I wish I had a V8"

Grumpy Bear · December 24, 2020

9 hours ago, RustyTrombone24 said:

k well i didnt buy a 60 thousand dollar full size truck for it to run on 4 cylinders.

So I guess the 2.7 Turbo is a nonstarter

:crackup:

I, as well, am a V6 owner who has gone to some lengths to keep it in V4 mode and been rewarded with a 28 mpg average for over 130K miles. I still have near 300 hp on tap when I want it. More than enough for the touring service I use it for.