03-27-2012, 09:49 AM | #1 |
Burning up tires
Drives: 2023 ZL1 Vert Join Date: Jul 2010
Location: Macomb Twp, MI
Posts: 717
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Question for Cammed guys
Since I installed my JRE 470 cam package, I no longer get the decel pop. Before the cam install she popped like a angry bitch
Is this a function of the cam changing the valve timing or a function of the tune? |
03-27-2012, 09:55 AM | #2 |
Drives: 2012 2SS M6 Join Date: Dec 2011
Location: Phoenix, AZ
Posts: 768
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Pretty sure it's the tune. Mine pops about as much with the cam as it did before.
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2012 2SS Convertible
Magnuson, Headers, Cam, JRE Tune. 563 HP. |
03-27-2012, 09:56 AM | #3 |
Quit being a pu$$y
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It's the tune.
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03-27-2012, 10:00 AM | #4 |
Drives: 2015 c7 Join Date: Nov 2009
Location: MI
Posts: 7,462
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mine is not there also. wonder why they tuned it out. i see a lot of people saying the same thing.
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03-27-2012, 10:07 AM | #5 |
Drives: 2010 Camaro 1SS/RS Join Date: Feb 2010
Location: Oklahoma City
Posts: 222
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Mine has left me as well. I can get it sometimes but not all the time like I did when I first got my headers. Kind of missing it.
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Texas Speed LT Headers (no cats), LS3 Monster blower cam, Muffler Delete, Stage 3 Spec 3 Clutch,102mm F.A.S.T Intake Manifold, Comp Cam Push Rods, Comp Cam Dual Springs, D1-SC Procharger, ID850cc Injectors, Stealth Fuel Pump, F.A.S.T Fuel Rails, Tune by Brett Seaburg, Nitto Street Radials, Amber Halos and Fog Lights, Window Tint (5%) Nightshade Tail Lights, Interior Amber Dome Light and Trunk.
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03-27-2012, 10:10 AM | #6 |
Drives: 2012 2SS M6 Join Date: Dec 2011
Location: Phoenix, AZ
Posts: 768
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I'm curious about that, too. I'm wondering if there is a reason to have it gone and something got missed on mine or if they just tune it out it because a lot of folks don't like the popping. I like it myself and I'm glad it's still there.
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2012 2SS Convertible
Magnuson, Headers, Cam, JRE Tune. 563 HP. |
03-27-2012, 11:15 AM | #7 |
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I dunno what my tuner did - forgot to ask. Next time I talk to him I'll ask. However, mine still crackles and pops at times under decel - coast down situations but more like my older muscle cars did back in the day. I liked the stock engine decel pop but it aways sounded more artificial - not natural and the popping I get now sounds more normal/natural if that makes sense.
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2016 Camaro 1SS Hyper Blue 6MT NPP
2010 Camaro 2SS Cam/Headers/CAI/3.91 gears 476 rwhp/440 rwtq (sold) |
03-27-2012, 12:07 PM | #8 |
Drives: Camaro Join Date: Dec 2011
Location: Woodstock, IL
Posts: 27
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It is a function of the tune. The popping is from a lean condition from Decel fuel cutoff. Now with the new parts and the way the tune is setup it is either turned off or you are not hitting the correct condition to go into DFCO anymore. Some tuners turn it off especially in cam'd vehicles since owners have complained that it is not a sound they like. Shoot an email over to your tuner and we are sure they will explain what they did in your tune for you.
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03-27-2012, 12:18 PM | #9 | |
Drives: 2012 2SS M6 Join Date: Dec 2011
Location: Phoenix, AZ
Posts: 768
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Quote:
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2012 2SS Convertible
Magnuson, Headers, Cam, JRE Tune. 563 HP. |
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03-27-2012, 12:22 PM | #10 |
Drives: 2010 aqua blue SS/RS M6 Join Date: Feb 2010
Location: plainfield, IL
Posts: 2,706
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I have to dissagree... I have my cam and been driving it on the 2nd week no tune. ( not untill the 4th ) and my decel popping is also gone!
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10.91 at 122 H/C stock block N/A
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03-27-2012, 01:42 PM | #11 | |
Drives: Camaro Join Date: Dec 2011
Location: Woodstock, IL
Posts: 27
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Quote:
Sounds like your current AFR's are well in the safe range. Then you are in the second case of no longer reaching the factory parameters to go into DFCO. You have to be within a certain ECT, RPM, Speed, TPS and Load. Seeing that you have a cam and no tune your load reading are currently off slightly and keeping you outside of the factory limits. |
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03-27-2012, 02:45 PM | #12 |
Drives: 2010 aqua blue SS/RS M6 Join Date: Feb 2010
Location: plainfield, IL
Posts: 2,706
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Car will tuned next week, it actaully drives very good just the idle is to low with a little hunting on a slow down. Cant wait to get it tuned.
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10.91 at 122 H/C stock block N/A
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03-28-2012, 09:32 PM | #13 |
Drives: cts-v Join Date: Dec 2011
Location: Mooresville, NC
Posts: 506
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Many tuners will turn it off and leave it off because you have to turn it off anyways when tuning fuel trims and many people find the sound annoying. If they do turn it back on and leave it at factory settings, (depending on cam) all the conditions to activate DFCO (what makes the popping noise) may not be met. If you would like it activated, ask your tuner to street tune it with you in the car so they can set the aggressiveness and conditions to your liking/driving style.
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