09-18-2017, 10:41 PM | #1 |
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Varying prices on catted DPs
Just perusing the ol extreme powerhouse website here and finding many more downpipe options than I thought. With cats, and without fancy finishes, here's a list of prices.
Can anyone shine some light on any particular strengths of these guys? Weaknesses? I really just do not want a CEL but plan on picking a DP at some point. Would be nice to save a few hundred bucks if quality doesn't suffer.
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09-19-2017, 02:29 AM | #2 |
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I think, Downpipes are pretty much the same.
They all have a inlet 4' diameter, what your looking for it fitment, the better the fitment the better it will be as there should be a full seal to prevent any leak. Also one that has less bends is more advantages for more free flowing. As for a no CEL. I highly recommend Fabspeed as they have had great feedback from USERS. (Word of mouth is extremely truthful and useful). Other then that, it will come down the material they use (Stainless 316 is better than 304). and how good the weld is. Other then that, downpipes are FAIRLY similar (Short pipe lol) |
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09-19-2017, 04:27 AM | #3 |
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My father used to say, "do it right the first time". So you initially save some money by cheaping out, we all do it and never seem to learn, so you get a great price initially, but by the time you figure how to solve getting rid of the CEL, passing emissions tests you most likely have invested more money trying to solve the issue. The reason I went with Fabspeed was the fact that pretty much no one has gotten a CEL with these, maybe bordering on 100% no CEL. Did catted downpipes on my 135i (N54), supposedly won't throw a code, they did, had to install O2 simulator to fix it. The installed JB4 would clear the codes on auto clear, but also clears the memory so there was no history on the ECU which the testing computer would find unacceptable and reject the car. The dilemma was In order to get the history to show all systems go you had to drive the car to create a new history, but with auto clear off, and chances are the magic CEL would reappear in the process. Eliminating the code with a code reader would clear the fault and the history. Wish I had had the Fabspeed option available in 2008.
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09-19-2017, 06:11 AM | #4 |
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Every downpipe will eventually throw a CEL even stock, as they get older the Cells in the cat eventually become dust and you'll have no cats which will trigger CEL with the O2 sensors.
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09-19-2017, 07:40 AM | #5 |
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So the real question is then how long until a sport cat downpipe eventually throws a CEL vs stock, correct?
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09-19-2017, 09:46 AM | #7 |
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Yes this is correct. HJS are renounced for their high quality Cells within cats, less prone to breaking down. However eventually all cars do. But it may be like 8-10 years+ depends on the quality of OEM and also how hard the cells have to work to filter stuff out, but that stuff all depends on how hard you drive the car too!
However, by the time that happens warranty is over and the CEL wont cause the car to go into limp mode (limited power) so you'll be fine, there are many ways to clear CEL, including o2 simulators, clearing code apps, tuning etc etc. |
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09-19-2017, 04:07 PM | #8 |
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My E39 M5's OEM HJS cats were done for at 130,000km. It didn't throw codes but it smelled awful and actually reduced performance. So that's nothing new to me.
But IIRC only the Fabspeed has HJS cats and yet the prices are all over the place. There's negative feedback outside of this forum as well towards Fabspeed. So I am not 100% convinced Fabspeed is the defintive name in quality and isn't overpriced. That said if it's the only one replicating OEM quality, I guess that's what I'll go with.
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09-19-2017, 04:26 PM | #9 |
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I had my Performance Edition in for the 1200 mile first service and the tech was impressed with the Fabspeed, and was amazed at the exhaust note, stating it was incredible and further commented it was the best sounding exhaust he had heard on any BMW, fwiw.
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09-19-2017, 08:48 PM | #10 |
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IMO.
Go with a Fi Exhaust (Catless) + tune. Because its valved it can make it as quiet as stock, or as loud as you want! Even an auto mode when it surpasses 3,500 RPM the valves auto open. Best sound + more power gain too! |
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09-19-2017, 09:45 PM | #11 |
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Catless isn't worth the smell over hiflow cats IMO. Is FI any good? I have a decent quote in my inbox here from a vendor. HJS?
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09-19-2017, 11:58 PM | #12 | |
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Any of the above prices amortized daily over the life of the performance will yield very little money spent per day. How much do people spend on Starbucks daily? I say try a cheaper one first, and then get a more expensive one if that fails.... just cut out the Starbucks and you'll be coming out ahead! A vendor has told me Wagners have had as few issues as Fabspeed and surely way less drama. |
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09-20-2017, 12:03 AM | #13 |
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Well, the full Fi Exhaust is what can I say..
LOUD and WOW. its definitely on the louder side of things for exhausts. It's a jaw dropping exhaust system. Thats what I like, but depends on the user! |
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09-21-2017, 06:25 AM | #14 |
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He didn't work for BMW very long.
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10-10-2017, 01:55 PM | #15 |
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That's where I'm leaning. Would you happen to know who makes the cats?
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10-11-2017, 07:11 PM | #16 |
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10-12-2017, 11:32 AM | #17 |
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I plan on going with the HJS Euro 6 catted downpipe. It's quite pricey, but looks very OEM and very high quality. It has a 300 cell HJS cat vs the 200 cell HJS cat used on the Fabspeed DP. The higher cell count will reduce exhaust volume compare to the Fabspeed and other catted DP setups. The extra $200-300 is worth it to me.
http://f87.bimmerpost.com/forums/sho....php?t=1339166 |
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10-12-2017, 06:32 PM | #18 | |
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10-12-2017, 07:30 PM | #19 |
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I've looked around. I really like the finish/build of that downpipe. Looks very OEM. Prices are insane though.
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10-13-2017, 01:10 PM | #20 |
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10-16-2017, 12:13 PM | #21 |
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Fabspeed sells it. $1,500. http://www.fabspeed.com/bmw-m235i-f2...tted-downpipe/
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10-16-2017, 12:54 PM | #22 | |
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