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AFM Sucks

AFM Sucks

Postby SGTsilveraado [OP] » Apr 01 2012, 11:55pm

So I was cruising along at 45 or so in 4 cylinder mode when the light turned yellow. Didn't really have enough time to stop and no one was in front of me so I stepped on the gas. Got that awesome delay before it switches back into 8 cylinder and hit the light when it was "pink." Got pulled over and the first thing the cop says when he gets to my window is, "AFM sucks doesn't it." I just laughed, he checked my license and sent me on my way. Guess he must own a 5.3 too.

Anyway, after driving this truck for around 10,000 mi I have to say my opinion of AFM is that it is nothing more than a marketing ploy. Too bad I cannot turn it of with my EDGE CS, might be time to flip the EDGE for a different tuner. Im going with the 6.2 or whatever GM has out without AFM next time.
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Re: AFM Sucks

Postby rdss » Apr 02 2012, 12:33am

Diablo tuners can turn AFM off for you. With a 2011 there might not even be a motor without AFM or some kind of fuel economy mode built into it when you're ready for a new truck.
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AFM Sucks

Postby wheeler82 » Apr 02 2012, 12:38am

Man glad u didn't get a ticket, cool cop. But I have not seemed to have an issue with mine yet, seems pretty flawless, maybe mines special lol!
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Re: AFM Sucks

Postby johndeere9203 » Apr 02 2012, 12:43am

my 2012 6.0 does not have AFM and i love it!!!!!!!! i hated the 5.3 i had with the afm IT WAS BAD!!!!!! no power when you needed to pass someone at highway speed...... got annoying
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Re: AFM Sucks

Postby wabbitchaser » Apr 02 2012, 8:43pm

If your crusin 40-50 mph, simply put it in M5, AFM will not kick in. AFM gives me great gas mileage when running 55-65 mph on flat level roads.
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Re: AFM Sucks

Postby squeakyg » Apr 05 2012, 2:01am

I can so-sign the part about the lag, but the fuel efficiency is more than noticeable in my truck with AFM. I will only get 14-15 mpg driving around in M5. AFM bumps that up to around 17-18 if I manage the consumption. I guess you can't have your cake and eat it too.
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Re: AFM Sucks

Postby rdss » Apr 05 2012, 1:46pm

That is so true. I have been running without AFM since January and I'm getting between 15.5-16.0 mpg. I am looking forword to seeing how she does with tuning and the AFM back on.
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Re: AFM Sucks

Postby dalejrfan88 » Apr 05 2012, 9:50pm

Yes it does..mine is very quiet though, i cant even tell its switching. Im pulling 18.5 mpg with the 5.3 but that active waste management is causing me to burn a little oil :(
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Re: AFM Sucks

Postby JCunningham » Apr 07 2012, 6:02am

it is bs. i turned mine off. The truck always read 2mpg better then it was with the 4cyl mode on. turn it off and you still get the lag but the truck will run better.
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Re: AFM Sucks

Postby stretchssilverado » Apr 07 2012, 8:04pm

AFM definitely sucks, I always keep mine in M5. I cant feel the change from V8 to V4, but the lack of power when needed is very frustrating.
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