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07-03-2016, 02:31 PM
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#1 |
 
Drives: 2011 Camaro SS Summit White Join Date: Sep 2015
Location: Massachusetts
Posts: 159
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why does ls3 backfire more than l99?
this is a question im not sure if anyone can help me with. my buddy has ls3, i have l99. his car pops and backfires WAY more than mine. does anyone know why? i think the pops are so cool lol thanks!
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D1sc procharger, gpi ss3 vvt cam, alky control, build 6l80e, tsp longtubes, corsa zl1 catback, eibach pro 1” springs
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07-03-2016, 02:32 PM
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#2 |
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Banned
Join Date: Jan 2015
Posts: 1,089
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Decel pop. Not backfire. It's just how the tune/valvetrain works
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07-03-2016, 02:39 PM
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#3 |
            
Drives: 2011 SS-RS Join Date: May 2011
Location: FLORIDA
Posts: 14,043
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His is louder because he doesn't have the huge resonator like the L99's have, he has 2 small ones, unless he has aftermarket. Mine is an L99 with headers and aftermarket exhaust and it pops pretty loud. What actually makes it pop is the DFCO,, deceleration fuel cutoff..Pretty cool sound!!
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TSP STAGE 3 CAM,231/246 @112 LSA 614/641 LIFT, CIRCLE D 5C-4200-4500 CONVERTER,LOD INTAKE.CORSA EXHAUST. DSS 1 PC DS. PEGASUS SOLID CRADLE MOUNTS. 486RWHP/475RWTQ.LOTS MORE.
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07-03-2016, 02:46 PM
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#4 |
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Account Suspended
Drives: 2011 2SS/ RS INFERNO ORANGE L99 Join Date: Dec 2012
Location: Alliston Ontario Canada
Posts: 9,057
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My L99 really snaps......muffler delete hi flows .....headers.
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07-03-2016, 02:58 PM
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#5 |
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Drives: 2014 2ss 1le Join Date: Sep 2011
Location: los angeles
Posts: 1,074
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Because racecar!
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07-03-2016, 05:37 PM
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#6 |
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Drives: 2011 Camaro SS Summit White Join Date: Sep 2015
Location: Massachusetts
Posts: 159
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Right I have borla atak catback kooks headers no cats. But I feel like his is so much more frequent. I have a dyno tune as well. If I do the ls3 conversion (which I planned on already) would it happen more frequently? Thanks all!
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D1sc procharger, gpi ss3 vvt cam, alky control, build 6l80e, tsp longtubes, corsa zl1 catback, eibach pro 1” springs
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07-03-2016, 08:41 PM
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#7 |
 
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can you decelerate in a lower gear?
try leaving it in third, coming down from say 80. is your AFM tuned out? this might have more to do with tranny and driving style. |
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07-03-2016, 10:17 PM
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#8 |
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Drives: '12 2SS/RS 45th vert, '14 2SS/RS Join Date: Nov 2013
Location: Claremore, Oklahoma
Posts: 840
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Because the auto will drop the RPMs and coast. As long as the manual is in gear and the clutch pedel not depressed, the wheels turning will get that motor cranking at those higher RPMs while the full gets cut to sub-combustion levels.
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07-04-2016, 12:26 AM
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#9 |
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Drives: 2011 Camaro SS Summit White Join Date: Sep 2015
Location: Massachusetts
Posts: 159
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Hmmm I mean it does lol idk just not on a ls3 level
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D1sc procharger, gpi ss3 vvt cam, alky control, build 6l80e, tsp longtubes, corsa zl1 catback, eibach pro 1” springs
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07-04-2016, 04:48 AM
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#10 |
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Homeless Life Chose Me
Drives: LS3 (sold 4/21) Join Date: Nov 2014
Location: Streets of Philly
Posts: 3,648
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Get a Huracan. Those things are popping everytime u take ur foot off the gas lol
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Pity a man in familiar places, who yet feels like a stranger.
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07-04-2016, 08:41 AM
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#11 |
Drives: Black L99 2SS/RS Join Date: Mar 2014
Location: San Antonio, TX
Posts: 1,862
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Put your car in Sport (M) mode and downshift at higher RPM's... I have longtubes, hi flow cats and NO resonator... this sucker pops like CRAZY... and I love it.
However, if I decel in regular Drive (D) mode... when the car downshifts for you it's much less frequent since it's at lower RPM's. |
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07-04-2016, 09:05 AM
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#12 | |
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Drives: 2011 Camaro SS Summit White Join Date: Sep 2015
Location: Massachusetts
Posts: 159
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Quote:
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D1sc procharger, gpi ss3 vvt cam, alky control, build 6l80e, tsp longtubes, corsa zl1 catback, eibach pro 1” springs
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07-04-2016, 11:44 AM
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#13 |
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Drives: 2010 Camaro 2SS Victory Red 6M Join Date: Apr 2015
Location: Gulf Coast, TX
Posts: 1,424
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It's mainly because as you slow down in a LS3 car, as with most manual trans cars, if you have the clutch engaged, it's using engine braking and causing the pops as well as the tune. An auto car can engine brake too, but it's softer so to speak because of the tq converter absorbing some of the shock. That's the best way I can explain it really.
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2011 2SS 6A Red Jewel Metallic, Vararam Tune CAI, Magnaflow 3" Competition c/b, Speed Engineering 1-7/8 LT's, Circle D 5C, M/T 275/40R20 S/S, HPTuners tune by Ryan@GPI
12.3 @ 112 ACM as of 12/22/19 Gone on 12/28/19 R I P 2010 2SS 6M Victory Red/Black (old ride) CAI intake, Speed Engineering 1 7/8" LT's, X4 base tune, Flowmaster Outlaw axle-back. 12.6 @ 115 SAR as of 9/19/15 Gone but never forgotten. |
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07-04-2016, 12:23 PM
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#14 | ||
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Captain Gingerbeard
Drives: 2012 IOM RS/SS 6MT Join Date: Mar 2013
Location: West Twin Cities, MN
Posts: 2,489
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Quote:
Your car has the torque converter adding some slack between the drivetrain and the engine. A clutch is directly connected.
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Custom ordered 2012 6MT RS/SS on 11/25/2011. Picked up 01/31/12.
Pedders Coilovers, BMR trailing arms and toe-links, Prothane solid poly subframe bushings, JDP Motorsports rear upper control arm bushings, Texas Speed long-tube headers with 2" primaries, modified fully 3" Magnaflow competition catback. CAI cold-air intake. DBA rotors, Hawk pads. Quote:
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