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Old 09-18-2017, 11:08 AM   #1
steveww's Avatar
Drives: 2014 Camaro 2SS/RS
Join Date: Aug 2010
Location: Milford, OH
Posts: 211
Stainless Power HiFlow Cats Yes or no

Hello, I am about to install the LSA Supercharger, 6 rib Pully system on my L99. I am going conservative with my tune. I just wanted to get everyones opinion. I currently have 1 7/8 Stainless Power headers and Hiflow cats. I talked with Stainless and they said my HiFlow cats should be fine. as they are built heavy duty with metal parts not paper inside.. I am not tracking or racing my car just daily driving.. thanks

Window tint, Clear bra, 1 7/8 Headers with Hi-flow cats, ADM Performance-CAI, Slotted/Drilled Rotors with Ceramic carbon fiber pads. Painted Calipers, Drag wheels, Outlaw Catback Quad tips, CFD Shifter with Leather boot upgrade, LSA Supercharger, AEM AFR Gauge
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Old 09-18-2017, 02:11 PM   #2

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Drives: 2012 2SS/RS LS3
Join Date: Dec 2011
Location: Omaha, Nebraska
Posts: 1,535
#1 Question is are required to have an emissions inspection? I did hi-flows with ceramic honeycombs inside and just running a slightly rich or safe nitrous tune managed to blow the the elements out of the housing and managed to wedge themselves into my X-pipe. I would say for any decent power build if you can get away with not having cats, do so.
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Old 09-18-2017, 02:45 PM   #3
Drives: 2015 Camaro SS commemorative
Join Date: May 2015
Location: Utah
Posts: 297
my kooks high flow cats began to melt at around 700HP.
2015 Camaro SS, Texas speed 418,Currently shopping for new CAM. AGP 68/68, 3" loud valves/NPP exhaust, fore fuel system, Methanol injection. AEM TRUboost. Ngauge with fuel pressure and wideband logging. BMR drag suspension with carlyle brake kit. 15" ET drags and 17" skinnies. ZL1 3.73 gears , aluminum driveshaft. TH400 with circle D converter.
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Old 09-18-2017, 03:13 PM   #4
Drives: 2011 Camaro 2SS
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Location: Houston
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i wouldn't bother, you'll be blowing chunks out the tail pipe
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Old 09-18-2017, 05:59 PM   #5
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Drives: 10' 2SS RS L99
Join Date: Mar 2015
Location: CA
Posts: 529
cats + boost = melt
2010 2SS/RS -Huron Single Turbo Precision 76/75 cea
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Old 09-19-2017, 01:28 PM   #6

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Drives: 2010 2SS/RS I.O.M. Camaro 6MT
Join Date: Aug 2010
Location: Oakville Ontario, Canada
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Lol no paper in the cats? I would hope so! I have never heard of cats with paper in them. Either way when you run more boost you have a higher chance of melting the material inside them no matter how "heavy duty" they are.

Mine is mostly a daily driver and I run no cats. Make sure you get a good tune after you remove the cats. Sometimes you will notice a strong smell of un-burnt fuel and a slightly more raspier exhaust note.
2010 Cammed & Blown Inferno Orange 2SS/RS LS3 6M

Maggie TVS 2300 @ 8 psi/1:1 overdrive cogs/3.6 pulley/LPE GT-14 cam/ BW Stg. 2 PTB/KB BAP/ZR1 injectors/NGK TR71X plugs/Roto Fab CAI/Kooks LT's & cat deletes/Magnaflow x-pipe & mufflers/BMR springs/carbon fibre stripes/20% tint

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