Subject	Re: Test Pipes-3" to 2.5" High-Flow Cat Question?
Posted by	tumevain on May 02, 2012 at 1:16 AM
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In Reply To	Test Pipes-3" to 2.5" High-Flow Cat Question? posted by jessethehitman on May 01, 2012 at 05:29 PM
Message	Hello! As zfan21 wrote, high-flow cats are used if you need to pass emission testing. I got myself 3” to 2.5” with high-flow cats and passed emission testing pretty easily. At 2000 rpm emissions were very good but at idle I had little high hydrocarbon values (close to 100 ppm). You just need to heat high-flow cats a bit more than stock cats to pass emissions testing.
Follow Ups	Test Pipes-3" to 2.5" High-Flow Cat Question? - jessethehitman 17:29:03 05/01/12 You only need the hi-flow cats if you have to pass emissions - zfan21 17:45:46 05/01/12 Cats also quieted my vert down some. (n/m) - michaell32 21:12:59 05/01/12 Go figure, cats were louder on my car. (n/m) - Barry (NJ) 13:03:57 05/02/12 will help the exhaust smell less too. (n/m) - Rogy 23:40:06 05/01/12 Yep, I'd like to get high flow cats someday for this reason. (n/m) - Evan_Wright (Ca) 00:36:32 05/02/12 Re: Test Pipes-3" to 2.5" High-Flow Cat Question? - tumevain 01:16:34 05/02/12 After talking to SZ, I was advised to get resonated TP's - PiotrC70 08:12:48 05/02/12 I bought a set for my convertible. Straight TPs were too - ConVerTT 21:44:15 05/02/12
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