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06-25-2013, 01:16 PM
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#1 |
 Drives: 2018 Camaro 2SS, redline edition Join Date: Jun 2013
Location: Hackettstown, NJ
Posts: 209
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Why does my exhaust quiet down?
I have a 2013 2ss automatic Camaro with the following mods:
flowmaster catback outlaw exhaust k&n tyhpoon cold air intake Range AFM disabling product When I step on the gas, my car sounds nice and loud; however, when I do not have my foot on the gas, the exhaust sounds noticeably quieter. Is there a way to increase the sound of the exhaust when I do not have my foot on the accelerator? |
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06-25-2013, 01:35 PM
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#2 |
  
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Well this is how I see it. The exhaust slows down during idle. When you speed the motor up the exhaust speeds up and the mufflers do not have time to absorb the sound, thus allowing more sound to pass by. Less muffler will allow more sound. I have Corsa exhaust and after the mods it was pretty loud all the time. I installed a Magnaflow muffler to the pipes in the tunnel. During idle it is very quiet, but during acceleration it comes alive.
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There's more to life than gas mileage
LS3, Whipple, Custom Comp Cam, springs, pushrods, timing set, CAI intake, Apex cold air scoop, Doug Thorley TRI-Y headers, Billet Custom Products baffled Valve covers, Mighty Mouse Catch can, ADM FPCM, ZL1 fuel pump, MSD boost-a-pump, Hex Vent hood vents, ProSport gauges(fuel pressure, AFR, Boost), Corsa, 100 cell Cats. Jannetty remote tuned, Pfadt trailing arms, all parts user installed. No Dyno yet. Manual trans. 3.45 gears. Last edited by patternpilot; 06-25-2013 at 01:43 PM. Reason: wrong word |
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06-25-2013, 02:00 PM
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#3 |
      
Drives: 2SS/RS - Black - GFX Join Date: Nov 2008
Location: B'ham, Alabama
Posts: 2,458
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Are you referring to active fuel management (AFM)?
This is when your engine switches into 4 cylinder mode.
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Ordered: 10-13-08
Built: 3-30-09 (#1691) Recieved: 6-12-09 Blacked out, Cammed (Lunati Voodoo 233/245, .578/.598 @114°, +4°), ARH LTs, VR OTR CAI, Cutouts, and lots of other fun mods. |
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06-25-2013, 02:17 PM
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#4 |
  Drives: 2015 Z/28 #533 Join Date: Jul 2012
Location: NY
Posts: 6,731
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Umm if you're not giving the car gas it won't get louder. It's basic car knowledge.
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06-25-2013, 02:30 PM
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#5 |
Drives: 2000 Camaro SS Join Date: Feb 2010
Location: Louisville, Ky.
Posts: 25,179
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The volume and velocity of the exhaust gases slow down so there is less sound. Kind of like when you blow a whistle harder or softer.
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06-25-2013, 02:44 PM
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#6 | |
 
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Quote:
 if your not on the gas, your not making power...therefor no sound
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06-25-2013, 02:46 PM
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#7 | |
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[COTW 5/12/14]
Drives: 2012 CRT NF Cammed 2SS/RS For Sale Join Date: Oct 2011
Location: NOLA
Posts: 6,115
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Quote:
You need to read up on exhuast before you go modding. Headers, cats, mid pipes/resonator, and mufflers all effect the sound. (tips do too, but not much). An intake can change the tone as well
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06-25-2013, 02:57 PM
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#8 |
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Exhaust not as loud when you're off the gas pedal? Who'd have thunk it?
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06-25-2013, 03:06 PM
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#9 |
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V8 Lounge member #2
Drives: 2001 Ws6 Join Date: Sep 2009
Location: Burbank,IL
Posts: 6,373
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That's cause your using a low flow K&N hotair kit!
Switch to a highflow Cold air kit like CAI, ADM, rotofab and it will make your car louder even at idle! Oh and the "range won't help you" Tune it.
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2001 ws6, 40k miles, Ls3 416 stroker, short block built by PER the rest by me. LPE Ls3 heads milled to 12-1 comp, FAST 102, NW 102, kooks 2", dual DMH cutouts, Magnaflow C/B, BTR cam + springs. Full UMI suspension.
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06-25-2013, 03:33 PM
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#10 |
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Drives: 2018 Camaro 2SS, redline edition Join Date: Jun 2013
Location: Hackettstown, NJ
Posts: 209
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Thanks for the input guys. I just remember my previous 2001 Mustang GT was always loud, even at idle and when I did not have my foot on the gas pedal.
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06-25-2013, 03:58 PM
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#11 | |
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I'll be back...
Drives: Subaru, HD Road Glide Special Join Date: Apr 2012
Location: Omaha, NE
Posts: 3,036
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Quote:
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Bye bye, Bumblebee!
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06-25-2013, 04:30 PM
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#12 |
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Stroked and blown
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If its manual ... Just push the clutch down use the handbrake and keep your foot on the gas, I think that will work.
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LME 416 LS3 shortblock/Callies Compstar 4340 4"crank/Callies 6.125 H beams rods/Wiesco 4.07 forged pistons/Cam Motion custom LS1/LME ported heads /maggie TVS2300/I West 8rib 10%OD /3.2 pulley/OD cog drive/JRE tensioner/ID850 /ADM dual fuel/Kooks LT 1 7/8/magna flow2.5 /cat delete/Roto Fab CAI /MGW short throw /SPEC super twin clutch/G Force built trans,carbon syncro rear shaft upgrade /DSS 9"single CF DS /Strange 3.70/31 spline trutrac/MT DR's/earls oil cooler /tuned KHC
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06-25-2013, 04:50 PM
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#13 | |
 
Drives: 2013 Black SS/RS Join Date: Dec 2012
Location: Florida
Posts: 126
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Quote:
 You have to be kidding...
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2013 2SS Black~ L99
Performance Mods-CAI intake, APEX washer bottle relocate and scoop, Ported TB. SLP 160 degree stat, Norris Catch-can, Pfadt Tri-Y headers, BMR F/R sway bars and Arms, Corsa cat back exhaust. Appearance Mods-Blackout kit (markers, tail lights), black tail light bezels, black chrome trunk lettering, LSR billet engine dress-up kit, sub box. Billet tensioner pulley and thermostat housing (Billetcustom), Heritage grille. Tuned by Matt @ Florida Speed and Power 379/388 Mustang dyno |
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06-25-2013, 05:02 PM
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#14 | |
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Drives: 2013 VR 2SS RS Join Date: Sep 2012
Location: Kansas
Posts: 619
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