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11-04-2013, 07:29 PM
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#1 |
  
Drives: 2010 2SS/RS LS3 A6 Join Date: Mar 2011
Location: West Haven, UT
Posts: 790
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Cat-astrophy Cats destroyed!
Ok, so I was told to remove my cats when I added the nitrous system. I was planning on it anyway since I'm spraying C16 with my dedicated fuel cell when running the N2O. C16 being a leaded gas, was a bad thing for the cats anyway.
So I installed the Nitrous, have ran through about 3 10 lb. bottles. After removing the cats what I saw wasn't good. I'm sure this has restricted my airflow, not to mention my car sounds like it's breathing now and has a way more aggressive exhaust note. I've included pictures to get comments on what you think happened. My question is, could this of happened over time even before I had the nitrous? My car was built about a year and a half ago and it's been running around 450 RWHP. The exhaust was the first thing I put on the car when I bought it. It's SLP LTH's with High flow cats. The rest of it is the PowerFlo stuff SLP sells to mate with it all in 3" size. With the nitrous, the car dyno's just under 600 RWHP. Cat 1 Cat 1 second view Cat 2 Cat 2 second view Back side of cat (looks normal)
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11-04-2013, 07:35 PM
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Yep, nitrous and 2 steps eat cats like a 16 year old at the bunny ranch.
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11-04-2013, 07:38 PM
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Drives: 2010 2SS/RS LS3 A6 Join Date: Mar 2011
Location: West Haven, UT
Posts: 790
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11-04-2013, 07:39 PM
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Seems like this boo boo made ur car louder. Cat-delete it ia!
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 2013 SS/RS 1LE VR-Backup System, SOLO Perforsance HF Cats, Muffler Delete, BBK Off-road X-pipe 2002 35th Aniversary SLP SS-Sold |
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11-04-2013, 07:40 PM
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Yes, those hi flos are ok for a na setup, but they aren't very durable with power adders.
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11-04-2013, 07:41 PM
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Be sure to double check your tune now, wot fueling may need a splash now that your engine can breathe....lol
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11-04-2013, 07:42 PM
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Drives: 2010 2SS/RS LS3 A6 Join Date: Mar 2011
Location: West Haven, UT
Posts: 790
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Quote:
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11-04-2013, 07:47 PM
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#8 | |
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Drives: 2010 2SS/RS LS3 A6 Join Date: Mar 2011
Location: West Haven, UT
Posts: 790
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Quote:
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11-04-2013, 09:29 PM
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Wow that is a terrible thing....
Scary too... Thanks for sharing....
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11-04-2013, 09:35 PM
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[COTW 4/13/15]
Drives: Supercharged LLT Join Date: Jul 2010
Location: Florida
Posts: 5,957
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Woah! This is the reason I gutted my cats when adding my SC
 Cat delete Ftw
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11-04-2013, 09:56 PM
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I removed my high flow cats when I put the supercharger on. I read the horror stories and decided not to participate.
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There's more to life than gas mileage
LS3, Whipple, Custom Comp Cam, springs, pushrods, timing set, CAI intake, Apex cold air scoop, Doug Thorley TRI-Y headers, Billet Custom Products baffled Valve covers, Mighty Mouse Catch can, ADM FPCM, ZL1 fuel pump, MSD boost-a-pump, Hex Vent hood vents, ProSport gauges(fuel pressure, AFR, Boost), Corsa, 100 cell Cats. Jannetty remote tuned, Pfadt trailing arms, all parts user installed. No Dyno yet. Manual trans. 3.45 gears. |
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11-05-2013, 12:51 AM
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Drives: 2010 2SS/RS LS3 A6 Join Date: Mar 2011
Location: West Haven, UT
Posts: 790
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11-05-2013, 03:54 AM
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My new cats only lasted 2-3 weeks after whipple went on, detonated the crap out of it killed my compression on 2 cylinders, they looked like yours in pic's, now have better engine though. I noticed a big diff in noise level at wot once cats were gutted, even with stock exhaust still in place, dare not open it up in residential area's any more.
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Camaro 2SS/RS 2010 / L99 / Whipple SC /Dynatech Headers & Catts (gutted), ID 850 injectors, ZL1 fuel pump +BAP & ADM pump controller, ZR1 3Bar MAP, Dual Elite Catch Cans, 91 octane ,Eibach sway bar kit , Driveshaft loop, oil cooler delete, ADM dual gauges (AFR/Boost) LC1 wideband controller, D/D, ARP stud kit ,Callies forged slayer crank 3.622", callies ultra rods, wiseco forged pistons, L99-LS3, rollmaster double row steel timing set & comps cam timing cover,blower cam 630/660 lift,3/8 pushrods, pac gear 8deg, yella terra ultra lites. LS9 head gaskets. Texas speed custom oil pump. Asm by me.
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11-05-2013, 07:35 PM
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Drives: 2010 2SS/RS LS3 A6 Join Date: Mar 2011
Location: West Haven, UT
Posts: 790
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Quote:
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