10-17-2019, 05:42 PM | #1 |
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N55 Decat downpipe queries
Do all decat downpipes flow/perform the same? Give or take..
Also, I've noticed a few manufacturers have separate parts for say the (EWG) M135I/M235I etc to the M2. I thought they were all the same. I'm about to buy, I'm not a cheapskate but I can't get excited about a hollow pipe. Is it worth spending the extra?
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10-18-2019, 03:57 PM | #2 |
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Buy the cheapest one with the support bracket like on the OEM cat. Don't buy from a brand that cheats out and leaves off the bracket.
Off the top of my head I can think of ER and Wagner that have the bracket |
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10-18-2019, 07:45 PM | #3 | |
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10-20-2019, 04:30 PM | #4 |
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Thanks for your input guys. That's narrowed down my search
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10-21-2019, 11:21 AM | #5 |
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Not all downpipes are the same as fitment and air flow play a big role. That being said any proven brand will performance. The only difference is going to be sound.
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10-21-2019, 12:48 PM | #6 | |
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Pricing meaning quality is not a good comparison for the bmw platform especially on an M, because at this point you're talking about M tax on top of bmw tax which is wack and a huge skewing factor. I've seen $200 Subaru downpipes look better in terms of welds and build quality than $1K BMW downpipes. As long as you don't have crazy bends or a bunch of welding stalactites then airflow shouldn't be impeded too bad, factoring that the diameter is the same. Sound may be different depending on resonance but I don't suspect it to be too different.
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10-21-2019, 12:55 PM | #7 |
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That's interesting. Do say the VRSF which look like a 2 stroke motocross pipe sound much different to say the Wagner which has a more uniform 'can' appearance
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10-21-2019, 12:56 PM | #8 | |
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10-21-2019, 01:56 PM | #9 | |
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For my m2 I'm going to get a titanium one made by a great shop in town (who makes stuff for the 720s), which is still going to be cheaper and better than the M tax stuff.
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10-21-2019, 02:34 PM | #10 | |
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10-21-2019, 02:37 PM | #11 |
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We offer VRSF
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10-21-2019, 04:01 PM | #12 | |
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Cheers Mike. The short term goal is stage 2, the end goal is uprated turbo , probably PS2 and supporting fuel mods. What combo (intercooler/downpipe/charge pipe) do yoi recommend please? The car will be tracked now and again but not too hard. Which would you say is the best value for money |
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10-21-2019, 04:01 PM | #13 | |
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Like this one F87? |
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10-21-2019, 05:12 PM | #14 | |
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Like I normally advocate fkr spending the premium and not being cheap to buy quality parts and support manufacturers. But I can't do that for a hollow metal pipe that should cost more than $150, which is what they cost on normal platforms, because it feels like I'm supporting the m tax.
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10-21-2019, 05:29 PM | #15 |
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That's what I would go with OP, tbh there are good options on eBay but sometimes you'll get a crappy seller from over seas. If I were you I'd probably save the hassle and just get the vrsf pipe from Mike since he's one of the stand up sellers on the forums, and it's only a bit more for a lifetime warranty as well.
I totally forgot about vrsf, but yeah their price may be a bit higher than eBay but you'll get great support and a life time warranty which does justify the price, especially if you get a good black Friday deal, and is one of the few brands that isn't m taxing everything.
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10-21-2019, 08:37 PM | #16 | |
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It includes BM3, VRSF charge pipe, interooler and downpipe. I do recommend to choose the VRSF 6" Competition intercooler for stage 2 or above power
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10-22-2019, 12:56 AM | #17 |
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Perfect, cheers Mike. I have my BM3 license from my F80. Is there an option to skip the tune? Will there be a black friday deal coming up?
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10-22-2019, 10:40 AM | #19 |
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Check your inbox
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