04-30-2020, 02:38 AM | #1 |
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Catted DPs
Is there any consensus on which catted DPs are best for a mixture of no CEL, OBD readiness, and price? Thinking about switching my VRSF out for catted.
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04-30-2020, 10:43 AM | #2 | |
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Im not aware of any downpipe which guarantees no CEL for the S55 engine. I think Akpraovic has the best luck but I dont think they guarantee it
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04-30-2020, 10:54 AM | #3 |
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04-30-2020, 10:56 AM | #4 |
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I make the same mistake at least once a week
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04-30-2020, 07:27 PM | #5 |
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Sigh parking in an enclosed garage that's shared makes catless feel very inconsiderate lol.
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05-03-2020, 02:01 PM | #7 |
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Pretty sure these are considered great:
https://x-ph.com/ar-design-m3-m4-downpipes/ @mike@x-ph.com should know best. Bear in mind he can only recommend these things for off-road use only. |
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05-03-2020, 02:14 PM | #8 | |
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Their cats are on same level as the other trusted brands
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05-05-2020, 02:50 AM | #9 |
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Turner Motorsport catted DP... value compared to the rest are extremely good. What is the quality of the Catts used and how do you find out? Mike i know you have plenty and ive bought stuff from you over the past, but turner are a repeatable company and surely those catted DP are good.
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05-05-2020, 02:58 AM | #10 | |
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The catalytic core itself is usually quite pricy if that's another indicator of the quality of Turner's offering since the complete product is priced so low. Higher end brands usually satisfy a few things: catalyst efficiency (the ability to effectively catalyze the exhaust fumes), longevity (how many miles of use before catalyst drops to poor efficacy levels), and durability (to heat cycles, pressure, etc) HJS is usually recognized as the world leader for cats. |
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05-05-2020, 10:21 AM | #11 | |
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AR & Wagner. I went with the Wagner's and will get a dyno done before and after a tune soon. My setup is charcoal delete with BMW dry filters, AA Center pipe and the Wagners 200's. Its quiet enough off throttle, but on throttle its quite the package :-) The DP's added about 20-25% more to the exhaust level. The center pipe was another 20-25% as well. I live just a few miles from TMS and know Will. As you probably know he sold his parts division to ECS a few years ago. Cheers, HAZMAT
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05-05-2020, 10:22 AM | #12 | |
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When a manufacturer uses high-quality cats, they'll make sure everyone knows it. There is nothing wrong with using generic brands, in most cases, it saves money while still offering the same airflow without a fuel smell. The main difference is the CEL light.
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05-07-2020, 01:42 PM | #13 | |
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Here's a decent article on cat quality and info: http://speed.academy/how-catalytic-c...69097900390625
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05-07-2020, 01:46 PM | #14 | |
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Looks like Wagner upgraded their cats to the 300 CEL on the N55. It should take care of the CEL, but they do not offer any guarantee
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05-07-2020, 01:54 PM | #15 |
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Yes on the N55 the cat is a 300 CEL and most of the time it hasn't thrown a O2 code. At least what I've read on the boards...
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05-08-2020, 12:55 AM | #16 | ||
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05-08-2020, 02:19 AM | #17 | |
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05-08-2020, 09:15 AM | #18 | |
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If you want to buy cheap cats, please do so. I never will again. We all vote with our wallets differently.
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05-08-2020, 09:17 AM | #19 | |
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Also, there is NEVER any smell with these cats that I have noticed...
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05-08-2020, 01:08 PM | #20 | |
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Proven brands use a generic brand that is of high quality. When you are getting a no-name pipe, they most likely are using the cheapest cats they could find. These cats are highly likely to fail
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