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06-19-2019, 09:44 PM
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#1 |
 
Drives: 2018 Camaro SS 1LE M6 Join Date: Oct 2018
Location: Northern California
Posts: 345
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Catted Ca Catless Longtubes
Just curious on noise level difference. I have the MBRP Raceback. About to pull the trigger on a set of 1 7/8” Kooks and can’t decide if I want to get the high flow cats or just go catless. Is the noise level significantly different between the two?
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Camaro 2SS 1LE, MBRP Catback, Mishimoto Catch Can, Rotofab dry, TSP1 7/8” headers,DSX FF, Pray ported MSD, 95mm TB
492WHP 473WTQ |
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06-19-2019, 11:03 PM
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#2 |
 Drives: 2016 Silver Ice Metallic SS Join Date: May 2017
Location: South Jersey
Posts: 196
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I can tell you right now, i just got TSP 1 7/8th headers catless installed on my mbrp race axle back and the thing SCREAMS anything above 2500 RPM's. It's honestly not the for the every day driver if you cant stand a lot of cabin noise. But if it does not bother you then go for it
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06-20-2019, 09:15 AM
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#3 | |
  
Drives: 2017 50th Anniversary 2SS Join Date: Sep 2016
Location: Jacksonville, FL
Posts: 930
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I have American Racing 1 7/8 headers and started catless but eventually went with some Vibrant Gesi High flow cats. The Highflow cats won't really make much of a difference in the volume of the sound but will refine it in a good way, reduce or eliminate any rasp and eliminate that awful smell that no cats force you to deal with.
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Former Ride: 17 Camaro 2SS, M6 - Fifty | Procharger P1SC | 3.7 Pulley | Stage 2 IC | Race Bypass | DSX FF Kit | JRE Custom E85 Flex Fuel Tune | LT4 Fuel System | JMS Voltage Booster | MSD Plug Wires | American Racing 1-7/8's LT Headers Full System Catback | Baro Breakout Harness | LT4 Map Sensor | Katech Ported TB | MMS Oil Catch Can | 160 Thermo | Solo Performance J-Pipes
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06-20-2019, 11:57 AM
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#4 |
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Drives: 2018 ZL1 Join Date: Mar 2019
Location: Houston tx
Posts: 144
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all my rides are catless. I absolutely love the sound of a cammed headers without cats thru exhaust. you can't go worng
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06-20-2019, 12:50 PM
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#5 |
        Drives: SS 6 speed of course Join Date: Jan 2016
Location: Hilo, HI
Posts: 4,316
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My car ran like shiznett and sounded like rusty tin can with no-cats, I have headers and have gone from mild to wild. Putting cats in was the best single mod I have ever done. I was going to do it anyway I just wanted the tune correct. no-cats sound like cheap Mustang exhaust IMO of course.
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Forged short block, large duration sub .600 lift Cam Motion cam, 7200 RPM fuel cut, Pray Ported Heads, 3.85 pulley D1X, stage II intercooler, DSX secondary low side, DSX E85 sensor, Lingenfelter big bore 2.0 pump, ported front cats, 60608 Borla, LT4 injectors, ZL1 1LE driveshaft and Katech ported TB, ported MSD intake, BTR valvetrain, ARP studs, ProFlow valves, PS4 tires.
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06-20-2019, 01:07 PM
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#6 | |
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Drives: 2018 Camaro SS 1LE M6 Join Date: Oct 2018
Location: Northern California
Posts: 345
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Quote:
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Camaro 2SS 1LE, MBRP Catback, Mishimoto Catch Can, Rotofab dry, TSP1 7/8” headers,DSX FF, Pray ported MSD, 95mm TB
492WHP 473WTQ |
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06-20-2019, 01:08 PM
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#7 |
 
Drives: 2016 1ss camaro Join Date: Feb 2016
Location: 909
Posts: 9,813
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i have afe power longtubes with cats and they told me in cali both are illegal so it doesnt really matter but you dont really need catless unless your running alot of e85 or race gas and cats/hi flow cats not gonna be a huge power difference
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 16 1SS NIGHTFALL GRAY METALLIC WITH NPP #BECAUSERACECAR #SAVETHEMANUALS |
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06-20-2019, 02:09 PM
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#8 | |
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Drives: SS 6 speed of course Join Date: Jan 2016
Location: Hilo, HI
Posts: 4,316
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Quote:
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Forged short block, large duration sub .600 lift Cam Motion cam, 7200 RPM fuel cut, Pray Ported Heads, 3.85 pulley D1X, stage II intercooler, DSX secondary low side, DSX E85 sensor, Lingenfelter big bore 2.0 pump, ported front cats, 60608 Borla, LT4 injectors, ZL1 1LE driveshaft and Katech ported TB, ported MSD intake, BTR valvetrain, ARP studs, ProFlow valves, PS4 tires.
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06-20-2019, 07:32 PM
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#9 | |
 Drives: 2017 Camaro 2SS Join Date: Sep 2017
Location: Minnesota
Posts: 9
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06-20-2019, 09:34 PM
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#10 |
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Drives: SS 6 speed of course Join Date: Jan 2016
Location: Hilo, HI
Posts: 4,316
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Some tuners turn off the rear o2 no matter what. There are smog reddy codes that never turnoff...soifyou have to pass smog...
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Forged short block, large duration sub .600 lift Cam Motion cam, 7200 RPM fuel cut, Pray Ported Heads, 3.85 pulley D1X, stage II intercooler, DSX secondary low side, DSX E85 sensor, Lingenfelter big bore 2.0 pump, ported front cats, 60608 Borla, LT4 injectors, ZL1 1LE driveshaft and Katech ported TB, ported MSD intake, BTR valvetrain, ARP studs, ProFlow valves, PS4 tires.
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