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12-12-2019, 09:40 AM
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#1 |
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BL1ZZRD
Drives: '16 Camaro 2SS, '20 Equinox Redline Join Date: Jul 2009
Location: Buffalo, NY
Posts: 7,840
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Do cat deletes cause smell inside the cabin?
For those running cat deletes or off road connection pipes with LT’s, does it smell inside the cabin especially when idling? I know they smell on the outside when I’m following someone with off road connections.
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12-12-2019, 10:14 AM
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#2 | |
Drives: 2011 Camaro SS/ 2016 Camaro SS Join Date: Jun 2009
Location: Sandy, Utah
Posts: 3,256
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Quote:
You may notice some smell inside the car if you idle for an extended period of time or if you have the air conditioning running on fresh air. If the exhaust is exiting all the way out the back of the car it shouldn't be too much of an issue. If it becomes really noticeable I would check the car for exhaust leaks. Kind regards, Stephen Komlos JDP Motorsports |
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12-12-2019, 10:22 AM
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#3 |
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I have Kooks 1 7/8 headers and high flow cats.
No smell. Catless, you betcha it'll smell.
__________________
2018 Camaro SS 1LE - 2011 370z - 2004 VW R32 - 2000 Civic Si Mods: Rotofab, Nick Williams 103mm TB, MSD IM, Kooks 1 7/8 Results: 470 hp / 447 tq |
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12-12-2019, 11:51 AM
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#4 | |
 
Drives: 2019 ZL1 / LE , 2014 CTS V Join Date: Nov 2015
Location: Pa.
Posts: 149
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Quote:
I had long tubes on my 2012 SS years ago with no cats and it smelled in the cab. I looked for exhaust leaks,pulled the carpet up , looked for holes in the floor, even replaced my door seals. It never bothered me a awful lot personally, but drove my wife and anyone else that was in the car nuts. The stink is nature of the beast when you start removing cats. I ended up putting the Kooks Green Highflow Cats on it and that took care of the issue. That bieng said, I wont take the cats off another car I own unless it would be a track car or something like that. |
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12-15-2019, 10:06 AM
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#5 |
Drives: 2017 1LE Join Date: Nov 2017
Location: Brooks, GA
Posts: 697
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None.
__________________
'17 Bright Yellow 1LE. PDR, STB, !CAGS
Borla 60606, 11925. Tony Mamo ported TB, ROTOFAB, !Sound Tube |
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12-15-2019, 10:12 AM
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#6 |
         
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,797
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I have cat deletes and run e85. Never smell anything inside the cab.
__________________
2016 NFG 1SS A8
Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA |
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12-15-2019, 04:51 PM
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#7 |
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INTSAGRAM: Failwish
Drives: 2019 /2SS LT1 Join Date: Jun 2015
Location: Tx
Posts: 232
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I had a crappy tune that was rich..it was eye choking..car and clothes smelled like straight burnt fuel..after correct tune installed.. everything is perfect..
__________________
2019/LT1 2SS
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12-16-2019, 06:49 AM
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#8 |
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Drives: 2018 Camaro ss Join Date: Jul 2019
Location: North Atlanta, Ga.
Posts: 147
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only when my windows are down. Buts smells more like gas then anything which is to be expected. Especially when idling a while.
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12-16-2019, 10:50 AM
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#9 | |
 
Drives: 2017 ZL1 Join Date: Mar 2014
Location: DFW, TX
Posts: 302
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Quote:
Same here! 
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12-16-2019, 11:56 AM
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#10 |
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Oh Oh it's Friday Night!
Drives: 2018 ZL1 1LE Nightfall Gray Join Date: Jan 2018
Location: Walton Woods
Posts: 1,061
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With a good tune it should be minimal.
__________________
2018 Camaro ZL1 1LE NFG; ARH 2” headers, catless mids, ARH full exhaust, Lingenfelter 18% lower pulley, ATI Harmonic Balancer, Roto-fab CAI, EE-catch can, TM ported TB, NX Lid, BMR strut tower brace. Aeroforce dual pod interceptor gauges. Tuned by Vengeance Racing!!! 644 HP @ 6250 rpm / 689 trq @ 3660 rpm
Four that wanna own me Two that wanna stone me One says she's a friend of mine... |
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12-16-2019, 06:18 PM
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#11 |
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BL1ZZRD
Drives: '16 Camaro 2SS, '20 Equinox Redline Join Date: Jul 2009
Location: Buffalo, NY
Posts: 7,840
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So the kit I bought only replaces the primary cats but the secondaries remain in line (stock pipes to axle). I wonder if that will help keep the smell down.
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12-17-2019, 09:54 AM
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#12 | |
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Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,797
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Quote:
__________________
2016 NFG 1SS A8
Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA |
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12-21-2019, 09:28 PM
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#13 |
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Drives: 2018 Camaro ss Join Date: Jul 2019
Location: North Atlanta, Ga.
Posts: 147
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E85 is less noticeable as it has a bit of sweet smell. When I run octane 93 and especially with additive booster it's pretty strong smell. All my cats are deleted tho. I have headers and stage 3 cam. But never smell it in the cabin with windows up
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12-22-2019, 06:34 AM
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#14 |
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BL1ZZRD
Drives: '16 Camaro 2SS, '20 Equinox Redline Join Date: Jul 2009
Location: Buffalo, NY
Posts: 7,840
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Thanks for all your comments! I actually sold the cat delete kit because I just don’t want to take a chance. I’ve decided to go with TSP headers with high flow cats. A little more work and money but I might as well just go all in if I’m gonna have to tune anyway.
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