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04-01-2017, 12:00 AM
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#1 |
    
Drives: 2012 1SS M6 IOM Join Date: Dec 2012
Location: New Rochelle New York
Posts: 1,428
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Another catalytic converter question
Couldn't find what I was looking for in a search, so I thought I would try this.
I'm right in the middle of installing my LSA supercharger.... If the math is correct, I should be looking at 550 or close to 600 hp. Now the question, I have 1 7/8 LT ARH with high flow cats........ will this cats survive the boost? I really don't drag race the car, I do a few high way pulls, but nothing crazy.
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2012 1SS Camaro LS3 Inferno Orange
Mods: LSA Supercharger, 2.55 Pulley, Custom Boost Cam, ARH LTH 1 7/8, HFC, 3' Magnaflow Exhaust, JLT CAI, Elite CC V2, BO White Stage 2 TB, GM 3.91 Gears, DSS CF Driveshaft, BMR Bushing Kit.... . Tuned by JTM Motorsports 540 Hp 550Tq on 9PSI Axles, Monster Clutch, Hotchkis TVS Track Pack kit.......For 2018. |
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04-01-2017, 06:25 AM
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#2 |
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Started#gottalovethatblue
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 Subscribed
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04-01-2017, 06:59 AM
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#3 |
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Drives: 2014 SS 1LE Join Date: Apr 2014
Location: United States
Posts: 660
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If it were my car I would just remove them
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04-01-2017, 09:41 AM
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#4 |
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You will be fine at that power level.
Typically when you start getting over 600 some cats have problems. The American Racing stuff will hold up really good. |
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04-01-2017, 11:22 AM
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#5 |
 Drives: 2010 Camaro SS Join Date: Oct 2013
Location: Saskatoon SK Can. Eh
Posts: 365
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 Mine failed. I gutted them.
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 2010 Camaro SS RS, Maggie with 3.4" pulley, 60# injectors, ADM dual fuel pumps, ADM Stage 2 Cam with Brian Tooley springs and pushrods, black CAI intake, Stainless Works long tube headers w/gutted cats, ZL1 Diff w/offset bushings, Pfadt lowering springs, Pfadt sway bars, Pfadt solid sub frame mounts, BMR trailing arms and toe rods, Hurst short throw shifter, Painted on Hugger Orange stripes, Forgestar F14 Piano Black wheels, Nitto NT05 rubber. |
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04-01-2017, 08:34 PM
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#6 |
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Drives: 2011 L99 SS Join Date: Oct 2014
Location: Texas
Posts: 500
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I removed mine going to 500.
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2011 SS
ADM LSA Conversion  |
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04-02-2017, 01:29 AM
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#7 | ||||
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Drives: 2012 1SS M6 IOM Join Date: Dec 2012
Location: New Rochelle New York
Posts: 1,428
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Quote:
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If I have no other choice, then I will. but Im not looking forward to it. Quote:
Quote:
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2012 1SS Camaro LS3 Inferno Orange
Mods: LSA Supercharger, 2.55 Pulley, Custom Boost Cam, ARH LTH 1 7/8, HFC, 3' Magnaflow Exhaust, JLT CAI, Elite CC V2, BO White Stage 2 TB, GM 3.91 Gears, DSS CF Driveshaft, BMR Bushing Kit.... . Tuned by JTM Motorsports 540 Hp 550Tq on 9PSI Axles, Monster Clutch, Hotchkis TVS Track Pack kit.......For 2018. |
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04-03-2017, 12:39 AM
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#8 |
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"Cam Only"
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I ditched my cats when I went with the LSA.
Not worth the risk. Plus E85 smells good if you go that route..
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2013 AGM Camaro 2SS/RS M6 | LSA Blower, 2.5" pulley, 10% lower, FIC1000's, Fore Innovations Twin Pump fuel system w/ Flex Fuel, CMS Custom Grind Cam, Kooks 1 7/8" headers w/ catless off-road pipes, NPP Exhaust, 3.91's, JLT ZL1 Intake, Prospeed Heat Exchanger | Pfadt Suspension, 1LE Sway Bars | DSS 1000hp axles |
Tuned by Ryne @ CMS E85: 734rwhp/636rwtq (mustang dyno) |
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04-03-2017, 12:56 AM
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#9 |
Drives: T Join Date: Mar 2015
Location: CA
Posts: 803
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if you are worried of the sound with no cats buy a muffler you enjoy, simple.
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04-03-2017, 06:39 PM
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#10 |
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Delete your cats ..I just blew up brand new SOLO HFC's on my Supercharged V6 with less than 25 miles on them,,running high 400's with 15 PSI boost
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04-06-2017, 02:15 PM
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#11 |
Drives: 2011 2SS/RS (M6) 427 Twin Turbo Join Date: May 2008
Location: NJ
Posts: 1,090
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If you can pass inspection i would ditch them, if you have to pass visual inspection get gutted out cats put on. If your state has a sniff test you prob will need cats ive heard good things about the Kooks green cats
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 2011 Camaro 2SS/RS ERL 427 M6 TT -AGP Twin Turbo 55/57 .83ar | ERL 427ci | Squash Fuel System | Stainless Works Chambered 3" | Mcleod RXT | Factory Hurst Short Throw | Black Forgestar F14s | CTS V 6 Piston Brembo | VIS AMS Carbon Fiber Hood | Anvil Carbon Fiber Spoiler |
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04-06-2017, 04:57 PM
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#12 | ||||
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Drives: 2012 1SS M6 IOM Join Date: Dec 2012
Location: New Rochelle New York
Posts: 1,428
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Quote:
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My good friend has almost the same set up, just no cats. And its just to goddamn loud. Quote:
2nd, iv seen some people on here that say to gut them, or run test pipes. All I want to see is, people that are running high hp numbers, under 600hp mark, are they having trouble with their ARH cats? Quote:
My problem is even with the HFC's that I have, you still have that egg smell.
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2012 1SS Camaro LS3 Inferno Orange
Mods: LSA Supercharger, 2.55 Pulley, Custom Boost Cam, ARH LTH 1 7/8, HFC, 3' Magnaflow Exhaust, JLT CAI, Elite CC V2, BO White Stage 2 TB, GM 3.91 Gears, DSS CF Driveshaft, BMR Bushing Kit.... . Tuned by JTM Motorsports 540 Hp 550Tq on 9PSI Axles, Monster Clutch, Hotchkis TVS Track Pack kit.......For 2018. |
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04-06-2017, 04:58 PM
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#13 |
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Drives: 2012 1SS M6 IOM Join Date: Dec 2012
Location: New Rochelle New York
Posts: 1,428
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The Good thing I found out was, ARH told me that just as long as Im not blowing flames out my exhaust, these HFC will be good at 600hp.
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2012 1SS Camaro LS3 Inferno Orange
Mods: LSA Supercharger, 2.55 Pulley, Custom Boost Cam, ARH LTH 1 7/8, HFC, 3' Magnaflow Exhaust, JLT CAI, Elite CC V2, BO White Stage 2 TB, GM 3.91 Gears, DSS CF Driveshaft, BMR Bushing Kit.... . Tuned by JTM Motorsports 540 Hp 550Tq on 9PSI Axles, Monster Clutch, Hotchkis TVS Track Pack kit.......For 2018. |
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04-06-2017, 06:21 PM
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#14 |
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I say you will be fine, if you do drive it reasonable most of the time. I ran a set of OBX catalytic converters on my car for almost 2 years without any issue, and I was 630RWHP at the time. I did finally gut them, but it was more for peace of mind, as they were still fine when I pulled them to gut them. I'm sitting at 675RWHP now, and I think they still probably would have survived, because I drive it reasonable most of the time.
It's not the boost alone that kills the cats, it's the WOT fueling and the addition of boost that causes the cats to look like the image in Post #5, or worse. Having a good tune is paramount as well. Bottom line, run your cats and don't worry about it. If you start doing more drag racing than street driving, then you may want to re-consider the "gutted cat" option. By the way, I have 1-7/8" long tubes, gutted cats, full 3" exhaust and mufflers, and the car isn't any louder than it was with the cats, it just has a little raspiness to it now. -Scott
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745RWHP/634RWTQ on 93 @ 10psi
806/676 on E85 @ 10psi  COTW 9/8/14 |
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