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#1 |
![]() Drives: 2013 Camaro SS Join Date: Dec 2013
Location: Dallas
Posts: 281
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LS3 - LT Header w/ cats. Raspy!
Just finished installing the Stainless Power, LT headers with cats on my NPP 2013 SS. Idle sounds amazing and cruising even better, but when I want to get on it, around 4k it becomes very, very raspy. Is this normal and if so, is this a desired sound. I have always made it a point on my other rides to get rid of rasp for a clean exhaust. Thanks in advance.
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2013 SS - LS3 | ADM Intake | Stainless Power LTs | 227/239 : 114 | Ported TB | Spintech Super Pro | 160* Stat | Hurst Short Throw | 1LE Sways | Factory ZL1 Reps | Quality Motorsports Tune
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#2 |
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145lb Powerlifter
Drives: 2013 Camaro 2SS RS LS3 Join Date: Jan 2014
Location: Conshohocken, PA
Posts: 1,146
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Did you get it tuned?
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#3 |
![]() Drives: 2013 Camaro SS Join Date: Dec 2013
Location: Dallas
Posts: 281
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Not yet. Just finished about an hour ago and my tuner doest have availability till next weekend. No CEL yet but the rasp is crazy,.
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2013 SS - LS3 | ADM Intake | Stainless Power LTs | 227/239 : 114 | Ported TB | Spintech Super Pro | 160* Stat | Hurst Short Throw | 1LE Sways | Factory ZL1 Reps | Quality Motorsports Tune
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#4 |
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Drives: 2010 Inferno Orange 2SS/RS Join Date: Apr 2010
Location: Clermont, IN
Posts: 3,297
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The rasp or lack of is personal preferrence. Its what you like....not the rest of us. For most of us with LT's and stock exhaust, the catted versiion is not raspy. Most of this is simply the nature of the LSx engines. I have had and heard so many different cat back systems.. and none really give you that old school deep sound. Get it tuned, that will help some. But let someone else drive it or listen when it gets on the dyno....sounds much better than you think.
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2010 Inferno Orange 2SS/RS M6 Black Leather, Sun Roof, OBX Headers, Borla touring axle back, Cold Air Inductions CAI , non synthetic fluids, BMR total bushing upgrade/1" lowering springs, DSE 32mm rear sway bar. GM fe4 shocks/struts/LCA's, AAM 3.91 diff, Vertini RFS1.8 20x9 +30. Conti ExtremeContact Sport 275/35/20. sjm autoprod ABL dash kit. Mike Norris tuned 413/419.
Avenging Orange: 43 years of not buying into the Hype........and damn proud of it!! https://youtu.be/9JD9it6SmB8 https://youtu.be/xmelTlEzI34 KICKING CANCERS ASS SINCE 2015!! |
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#5 | |
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2010 2SS RS
Drives: 2010 2SS RS (L99) Join Date: Aug 2013
Location: Wilmington, DelaWHERE
Posts: 749
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Quote:
+1 I never though my system sounded that great but after hearing it on the dyno and having someone do a flyby, it sounds pretty good.
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Performance Mods: K&N Cold Air Intake | Pypes Cat-Back Exhaust | Aluminum Paddle Shifters | VaraRam Wedge | Cross Drilled/Slotted Rotors | Hawk HPC Pads | M.M. Ported Throttle Body | Kooks 1 7/8 Headers w/ High Flow Cats | Dyno Tune @ RPM Cosmetic Mods: Rally Stripes (style1, style2, style2.2) | Splitter | Painted Calipers | Door Projector Lights | Front-Emblem Delete | Cup Holder Lighting | Quarter Window Covers | Phantom Grille | Ghosted Side Markers | Tinted Fog Lights | ZL1 Rockers | Tail Light Bezels |
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#6 |
![]() Drives: 2010 2SS LS3 Join Date: Dec 2011
Location: Port Credit -ON
Posts: 600
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Mine is a bit raspy, TSP headers no cats, magnaflow bullets mufflers. I love how it sounds!
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#7 |
![]() Drives: '13 Dusk Edition 2SS/RS M6 Join Date: Nov 2012
Location: Tuscaloosa, AL
Posts: 600
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Dyno:
http://youtu.be/vxm4Yu0SJJc Track pass: http://youtu.be/4w6vKz-b9g8 That's Long tubes, no cats, no mufflers. Raspy until wide open, then it's a beast
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#8 |
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Banned
Drives: 2010 Camaro Join Date: Mar 2014
Location: United States
Posts: 255
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nice job
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#9 |
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MURICA!
Drives: 2014 2SS 1LE Join Date: Sep 2013
Location: RGV, Texas
Posts: 459
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it must be your exhaust, the npp. i have stainless power with cats, through stock resonators, and then open dump (through cutouts). no rasp whatsoever
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Pro Amore Patriae
God gave three gifts to man; dogs, women, and the LS motor. 2014 Camaro 2SS 6MT RS 1LE Black on Black AFE Intake, Stainless Power Headers + HFC, BadlanzHPE Electric Cutouts. 315/275 Nittos, Wheels. Debadged, Cosmetic Mods, Sound System, More ![]() |
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#10 | |
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Drives: ‘13 1LE Join Date: Jul 2013
Location: Earth
Posts: 3,904
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Quote:
OP should try this before moving on to a needless $$$ step. |
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#11 |
![]() Drives: camaro Join Date: Mar 2014
Location: ken
Posts: 4
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I love how it sounds!
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#12 |
![]() ![]() Drives: 2014 Camaro SS Join Date: Sep 2013
Location: Waco, TX
Posts: 988
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I love my exhaust and how loud it is, but sometimes it does get annoying.
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#13 |
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Drives: ‘13 1LE Join Date: Jul 2013
Location: Earth
Posts: 3,904
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#14 |
![]() Drives: 2013 Camaro SS Join Date: Dec 2013
Location: Dallas
Posts: 281
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Honestly, I think its already gettin better, ive put a hundred plus miles on it already and its growing on me. I wont be dumping any money into the exhaust as I love the NPP. I dont want to have to weld anything into this one. I have a tune set for this weekend and ill be behind the dyno to listen, but I think it will have gotten better by then and the tune might help with the rest. Ill post some videos of dyno and acceleration for you all to have a listen.
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2013 SS - LS3 | ADM Intake | Stainless Power LTs | 227/239 : 114 | Ported TB | Spintech Super Pro | 160* Stat | Hurst Short Throw | 1LE Sways | Factory ZL1 Reps | Quality Motorsports Tune
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