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9/19/17 8:21am - Original Message: 'Does anyone have experience with the GM 5.3 AFM systems?'
Gribble123 Lifetime Member
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Kingston, PA - USA

Vette(s):
1977 L-82 originally white/buckskin interior. Currently undergoing a frame-off resto. and modifications.YEEHAW!!!

Joined: 11/26/2003
Posts: 636
Hi... I have a 2007 Tahoe with the 5.3 that has the OH-SO WONDERFUL active fuel management system.
I'm getting the OH-SO TYPICAL lifter tap, and I'm looking to do the AFM delete swap on it... I know thats a full cam and lifter swap, my question is... Is there any way to permanently re-program the ECM, or do I have to have that plug-in programmer plugged in forever?
Any help will be appreciated.
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9/19/17 1:18pm - Reply: 'Re: Does anyone have experience with the GM 5.3 AFM systems?'
F4Gary Gold Member
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Grapevine, TX - USA

Vette(s):
1972 LT-1 convertible with factory air.

Joined: 8/26/2006
Posts: 869
I have the Rage Technologies plug in thingy for my '14 Silverado.  Keeps it in V8 mode.

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9/20/17 5:17am - Reply: 'Re: Does anyone have experience with the GM 5.3 AFM systems?'
Sarge81 Lifetime Member
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WEST SENECA, NY - USA

Vette(s):
1981 Blue Ice Met. w/pearl ghost flames TKO500 5speed. LS1 Swap 3.45 Dana 44.

Joined: 12/3/2001
Posts: 2376
AFM can be deleted by a tuner. They use programs like HP Tuner etc. to edit that out of the ECM. 
I had a local guy plug into my ECM when I was getting ready to fire up the '81 after completing my LS swap. He turned off most of the emission stuff and rear O2 sensors since I wasn't running all that stuff. 


|UPDATED|9/20/2017 3:17:17 AM (AZT)|/UPDATED|


____________________________________

GEN III 5.7L "LS6" Engine swap
TKO500 5 spd.
3.54 Dana 44
'69 "N11" Sidepipes
Borgeson Steering Box
Born 8/1981
Sequence #3975




Click here to see more pics of my Vette on CarDomain.


Lifetime Member #26
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9/20/17 7:14am - Reply: 'Re: Does anyone have experience with the GM 5.3 AFM systems?'
Gribble123 Lifetime Member
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Kingston, PA - USA

Vette(s):
1977 L-82 originally white/buckskin interior. Currently undergoing a frame-off resto. and modifications.YEEHAW!!!

Joined: 11/26/2003
Posts: 636
Thanks for the replies. I have to replace the lifters anyway. The AFM lifters actually have springs on them, and they all fail eventually...Might as well get rid of the system, and put regular hydraulic rollers in there, and eliminate that problem...
If you drive anything with the AFM system on it, even if you have the bypass plugger, the mechanical parts WILL FAIL on you. 
I will look into a programmer... Thanks for the help, guys!
Alan


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9/20/17 10:13am - Reply: 'Re: Does anyone have experience with the GM 5.3 AFM systems?'
F4Gary Gold Member
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Grapevine, TX - USA

Vette(s):
1972 LT-1 convertible with factory air.

Joined: 8/26/2006
Posts: 869
Why don't you try a forum more familiar with this engine?  gm-trucks.com is a pretty good one.

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9/21/17 6:30am - Reply: 'Re: Does anyone have experience with the GM 5.3 AFM systems?'
Gribble123 Lifetime Member
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Kingston, PA - USA

Vette(s):
1977 L-82 originally white/buckskin interior. Currently undergoing a frame-off resto. and modifications.YEEHAW!!!

Joined: 11/26/2003
Posts: 636
I posted it on the Tahoe Forum... not a single reply.

I figured we're all car guys here, and know engines. It's also more friendly here than other sites.


|UPDATED|9/21/2017 4:30:15 AM (AZT)|/UPDATED|


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9/21/17 10:45am - Reply: 'Re: Does anyone have experience with the GM 5.3 AFM systems?'
F4Gary Gold Member
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Grapevine, TX - USA

Vette(s):
1972 LT-1 convertible with factory air.

Joined: 8/26/2006
Posts: 869
This guy seems to get a lot of good reviews on the truck forums.

http://www.diablewtune.com/


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9/23/17 8:33am - Reply: 'Re: Does anyone have experience with the GM 5.3 AFM systems?'
Gribble123 Lifetime Member
Lifetime Member
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Kingston, PA - USA

Vette(s):
1977 L-82 originally white/buckskin interior. Currently undergoing a frame-off resto. and modifications.YEEHAW!!!

Joined: 11/26/2003
Posts: 636
Thank you

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9/30/17 7:53pm - Reply: 'Re: Does anyone have experience with the GM 5.3 AFM systems?'
Sarge81 Lifetime Member
Lifetime Member
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WEST SENECA, NY - USA

Vette(s):
1981 Blue Ice Met. w/pearl ghost flames TKO500 5speed. LS1 Swap 3.45 Dana 44.

Joined: 12/3/2001
Posts: 2376
Check this guy out. 

____________________________________

GEN III 5.7L "LS6" Engine swap
TKO500 5 spd.
3.54 Dana 44
'69 "N11" Sidepipes
Borgeson Steering Box
Born 8/1981
Sequence #3975




Click here to see more pics of my Vette on CarDomain.


Lifetime Member #26
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