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11-22-2010, 12:13 AM
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#15 |
 Drives: 2010 2SS/RS L99 Join Date: Nov 2009
Location: California
Posts: 588
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I think a lot of you are confusing AFM with drone. Roger Ramjet is referring the resonance around 1800 to 2000 RPMs. I'm sure this is worse with some exhaust systems. it isn't a problem with my LTs and stock catback but, it was very pronounced with a Borla Street catback.
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11-22-2010, 10:59 AM
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#16 |
Drives: 2010 Camaro SS Join Date: Oct 2010
Location: MI
Posts: 601
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Very interesting theory... I'll be watching to see what comes of this.
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L99 - 440 RWHP
Livernois 2c Cam & VVT/DOD Delete Roto-Fab Intake Stainless Works 1 7/8" Long Tube Headers Corsa Exhaust |
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11-23-2010, 07:47 PM
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#17 |
 Drives: 2010 Camaro 2SS/RS Black Join Date: Apr 2010
Location: Saskatchewan
Posts: 14
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real dumb question.. what is afm
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11-23-2010, 08:02 PM
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#18 |
Drives: 2011 Victory Red Auto 2SS Join Date: Aug 2010
Location: West Tn
Posts: 628
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Automatic Fuel Management.
When certain parameters are met, the ECM shuts down the opening of valves and fuel injectors on 4 of the eight cylinders. Which may allow better fuel economy. Its only used on the V8 Auto trans models. If u do a search about AFM, u will find MANY post about this "FEATURE". |
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11-23-2010, 09:01 PM
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#19 |
 
Drives: 2010 Camaro 2SS Join Date: Jul 2010
Location: Illinois
Posts: 398
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Im no mechanic or expert....but i love hearing my v8....call it drone or whatever....but hearing it rumble down the interstate does not bother me at all....and the BA sound system turns up plenty to drown it out.....probably not relevant to the thread, but if you want a quiet car buy a family car
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11-24-2010, 11:43 AM
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#20 |
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Drives: 2011 Victory Red Auto 2SS Join Date: Aug 2010
Location: West Tn
Posts: 628
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With AFM engaged, mine sounds like it is 4 cylinder under load. Not a nice sound. I like the 8 cyc sound but when in 4 cyc mode, it sounds like something is wrong and is lugging the engine.
To each his/her own. |
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11-24-2010, 12:44 PM
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#21 | |
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Quote:
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12-11-2010, 07:00 AM
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#22 |
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Drives: 2010 red 2SS/RS L99 Join Date: Dec 2009
Location: Seale AL
Posts: 28
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AFM is garbage, it goes against everything this car is all about!
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12-11-2010, 09:44 AM
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#23 | |
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Drives: 2011 Victory Red Auto 2SS Join Date: Aug 2010
Location: West Tn
Posts: 628
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Quote:
I agree! 
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