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Old 09-18-2017, 11:08 AM   #1
steveww
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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
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Old 09-18-2017, 02:11 PM   #2
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#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
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my kooks high flow cats began to melt at around 700HP.
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Old 09-18-2017, 03:13 PM   #4
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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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cats + boost = melt
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Old 09-19-2017, 01:28 PM   #6
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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.
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