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12-23-2022, 04:37 AM
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#1 |
       
Drives: 2012 Chevrolet Camaro l99 Join Date: Aug 2020
Location: Austin, TX
Posts: 2,109
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Are my cats robbing my hp?
Hey guys so I have a fully built engine (mods in sig) and like the title says are my cats robbing my horsepower? I have the cats from Texas Speed so, what do you think I could gain from removing the cats?
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DSS FX Forged Pistons, Eagle ESP L19 Forged Rods, ARP Head and Main Studs, TSP PRC 260 CNC Ported Heads milled .030, Cometic .040 Head Gaskets, GPI SS3 VVT Camshaft, GM Performance Racing Lifters, CHE Trunnions , Molly Pushrods, Melling 10355HV Oil Pump, Cold Air Inductions CAI, Fast LSXR Intake Manifold, Nick Williams 103 TB, TSP 1 7/8" Longtubes with 3" TSP Exhaust, ZL1 Fuel Pump, Mishimoto Radiator, Mishimoto Oil Cooler, Tru Cool 40k Tranny Cooler, 3600 Circle D Converter, Fluid Dynamics Balancer
Build Thread https://www.camaro5.com/forums/showthread.php?t=609817 |
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12-23-2022, 05:08 AM
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#2 |
 Drives: 2013 ZL1 Join Date: Sep 2021
Location: Virginia
Posts: 302
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Probably not enough to feel the difference 5-10HP??? It will be a little louder, I have heard some people report they lost a little pulling the cats.
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12-23-2022, 05:10 AM
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#3 | |
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Drives: 2012 Chevrolet Camaro l99 Join Date: Aug 2020
Location: Austin, TX
Posts: 2,109
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Quote:
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DSS FX Forged Pistons, Eagle ESP L19 Forged Rods, ARP Head and Main Studs, TSP PRC 260 CNC Ported Heads milled .030, Cometic .040 Head Gaskets, GPI SS3 VVT Camshaft, GM Performance Racing Lifters, CHE Trunnions , Molly Pushrods, Melling 10355HV Oil Pump, Cold Air Inductions CAI, Fast LSXR Intake Manifold, Nick Williams 103 TB, TSP 1 7/8" Longtubes with 3" TSP Exhaust, ZL1 Fuel Pump, Mishimoto Radiator, Mishimoto Oil Cooler, Tru Cool 40k Tranny Cooler, 3600 Circle D Converter, Fluid Dynamics Balancer
Build Thread https://www.camaro5.com/forums/showthread.php?t=609817 |
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12-23-2022, 05:31 AM
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#4 |
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Mine is certainly louder without the cats.
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2014 Camaro SS L99, Ashen Grey w/Black Leather - Build thread - http://www.camaro5.com/forums/showthread.php?t=491561
Mods - GPI 416 w/Custom Grind Cam, Ported Heads & Tuned by Ben, Holley Dominator ECU, Mag Heartbeat, ZL1 Fuel Pump & DSX Aux Pump, NW 103 TB, FIC 1650's, Alky Meth, Circle D 3600 Triple Disc, Kooks Headers, Viking Coil Overs & all the BMR Goodies in the rear, Zl1 3.23 Diff, DSS Axles, Gulfcoast Driveshaft, Hendrix Offset Diff Bushings, AFE Solid Subframe Bushings, 875HP/843TQ 5FDP |
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12-23-2022, 06:09 AM
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#5 | |
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Drives: 2012 Chevrolet Camaro l99 Join Date: Aug 2020
Location: Austin, TX
Posts: 2,109
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Quote:
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DSS FX Forged Pistons, Eagle ESP L19 Forged Rods, ARP Head and Main Studs, TSP PRC 260 CNC Ported Heads milled .030, Cometic .040 Head Gaskets, GPI SS3 VVT Camshaft, GM Performance Racing Lifters, CHE Trunnions , Molly Pushrods, Melling 10355HV Oil Pump, Cold Air Inductions CAI, Fast LSXR Intake Manifold, Nick Williams 103 TB, TSP 1 7/8" Longtubes with 3" TSP Exhaust, ZL1 Fuel Pump, Mishimoto Radiator, Mishimoto Oil Cooler, Tru Cool 40k Tranny Cooler, 3600 Circle D Converter, Fluid Dynamics Balancer
Build Thread https://www.camaro5.com/forums/showthread.php?t=609817 |
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12-23-2022, 07:03 AM
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#6 |
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Started#gottalovethatblue
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Extremely little unless they're clogged. There was a study done years ago by ApexSpeed that showed the difference between header tube size and high flow cats vs catless. 1 3/4" tubes gained 5rwhp less than 1 7/8" which gained 5rwhp less than 2", obviously in a NA application. As for high flow cats vs catless the difference was about 1rwhp which could be equated to when they ran the car, was the engine 100% cooled back to prior temps, etc. In a forced induction situation I'm sure the difference would be a little more different, but it shouldn't be 20-30+rwhp different, in my unprofessional opinion.
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12-23-2022, 08:08 AM
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#7 |
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Drives: 2012 Chevrolet Camaro l99 Join Date: Aug 2020
Location: Austin, TX
Posts: 2,109
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Does anyone know if the TSP cats are really high flow? Cause I saw some of what they call "real high flow" cats, and they cost a lot more then the TSP ones and other comparable ones.
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DSS FX Forged Pistons, Eagle ESP L19 Forged Rods, ARP Head and Main Studs, TSP PRC 260 CNC Ported Heads milled .030, Cometic .040 Head Gaskets, GPI SS3 VVT Camshaft, GM Performance Racing Lifters, CHE Trunnions , Molly Pushrods, Melling 10355HV Oil Pump, Cold Air Inductions CAI, Fast LSXR Intake Manifold, Nick Williams 103 TB, TSP 1 7/8" Longtubes with 3" TSP Exhaust, ZL1 Fuel Pump, Mishimoto Radiator, Mishimoto Oil Cooler, Tru Cool 40k Tranny Cooler, 3600 Circle D Converter, Fluid Dynamics Balancer
Build Thread https://www.camaro5.com/forums/showthread.php?t=609817 |
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12-23-2022, 01:11 PM
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#8 |
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Started#gottalovethatblue
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If they're the ones that hook up to long tube headers, they're high flow cats. Some places charge more, but a lot of that has to do with where they were made, how they were made, and at times the quality of how they were made.
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12-23-2022, 01:23 PM
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#9 |
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Account Suspended
Drives: 2013 2SS/RS Convertible Join Date: Apr 2016
Location: Lehigh Valley, PA
Posts: 3,873
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I might have a set of ARH high flow cats in my parts box in the garage. JRE switched me to Kooks green cats when I went FI.
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