AFM and Aftermarket Exhaust

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AFM and Aftermarket Exhaust

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Chevrolet >> Brand Review >> Intake, Headers and Exhaust >> AFM and Aftermarket Exhaust

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AFM and Aftermarket Exhaust - 12/16/2007 5:12:15 PM

rthrbeboating

Posts: 4
Joined: 12/16/2007
Status: offline

I am new to the forum, but not new to Chevys. I just purchased a 2007 Silverdo with the 6.0 V8. Just put a new exhaust on it, nothing fancy. I have noticed that when AFM (goes to 4 cyl mode) kicks in, the exhaust noise sounds like garbage. Really is annoying. Has anyone else had this experience. Sorry if this is a repeat post. Thanks!

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RE: AFM and Aftermarket Exhaust - 12/16/2007 5:58:38 PM

EuroGoldLS

Posts: 1539
Joined: 7/12/2007
From: Princeton, NC, USA
Status: offline

Well, its because you have 4 cylinders firing. Most 4 cylinder engines will sound like crap through a 3" exhaust.

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RE: AFM and Aftermarket Exhaust - 12/16/2007 7:22:48 PM

rthrbeboating

Posts: 4
Joined: 12/16/2007
Status: offline

Better question, does anyone know how to keep it from going AFM (ie keep it 8 cyl) all the time? Does an ECU reprogrammer like from superchips do this?

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