03-25-2020, 03:37 PM | #1 |
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VRSF DP
Looking into buying a VRSF down pipe for my 435. Thinking catted since it is my daily commuter. I already have the MPE installed. Fingers crossed it sounds great! Any input on the catted DP is appreciated. Especially paired with the MPE.
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03-25-2020, 05:25 PM | #2 |
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Not sure if they actually released a revised version yet, but all previous versions had a issue with the secondary O2 bung such that the wire would not reach. Also, it does not have any bracket like the stock DP and other aftermarket ones that supports it/the exhaust. Some people run this without issue, but it doesnt sit well with me since the only thing supporting it (and all movement of the exhaust) is the turbo outlet. Finally, it will not pass emissions as of the last version.
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03-25-2020, 07:22 PM | #3 | |
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03-25-2020, 08:18 PM | #4 |
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The exhaust you mean? Because the VRSF DP does not for N55 F30. And are you saying the exhaust has a flex section to account for downpipes that don't have the additional brackets to secure them? Cause that doesn't really make any sense lol.
And acknowledging that the exhaust does have a flex section, without the additional brackets on the downpipe, all stress from the exhaust moving while driving that is transmitted through the flex section is going to be on the turbo outlet. That's why the brackets are there on the stock DP to prevent that. I'm not saying to OP he should not run the DP for this reason or saying it is going to break the DP, because as i mentioned plenty of people run the catless one that is the same way, i was merely pointing it out for his consideration. |
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03-25-2020, 08:19 PM | #5 | |
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03-25-2020, 08:27 PM | #6 | |
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https://www.vr-speed.com/vrsf-cerami...2-f33-f88.html |
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03-25-2020, 08:48 PM | #7 |
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Got it. Ewg doesn't have a flex, pwg and n20 do.
Muse tbe due to the diameter change. I have a CircuitWerks pwg downpipe, but it flares to 4" in the middle. It doesn't have a flex section but does include a brace.
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03-26-2020, 10:47 AM | #8 | |
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i know because i have it installed but for the OP this info wouldnt help i guess |
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03-26-2020, 10:58 AM | #9 |
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It will sound great I'm sure
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03-26-2020, 11:45 AM | #11 | |
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03-26-2020, 11:53 AM | #12 | |
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Fabspeed and Active Autowerke are the only 2 brands I know of that offer no CEL guarantee.
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03-26-2020, 12:28 PM | #13 | ||
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03-26-2020, 12:29 PM | #14 |
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You can either get the Active Autowerke catted pipe or BM3 + VRSF Catted
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03-28-2020, 11:28 AM | #15 |
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Drives: Bmw 335i f30 N55 ( sold)
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I have a catless Dp PWG STYLE mine has the flex n55
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2012 bmw 335i sedan
VRSF catless DP VRSF 5? HD IC Stock intake(had open before and was sick of noise) BMS CP 550i 351m rims with 275/245 set up. No tune as of yet. |
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03-29-2020, 11:21 AM | #16 |
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Note, the tune will only hide the CEL and you will still not be able to pass emissions.
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03-29-2020, 11:23 AM | #17 | |
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03-29-2020, 11:31 AM | #18 |
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You need to look up PA regulations and see. It will basically come down to whether or not PA allows you to have any monitors in the NOT READY state. Basically, the 2nd O2 sensor is used to monitor the efficiency of the cat. In addition to throwing a CEL if it thinks something is wrong with the cat (which happens will most aftermarket DPs except fabspeed and AA), it is used to determine the ready state of the cat. While the flash can disable this CEL from coming on, it cannot be used to make the monitor ready, so it will just hide the light from appearing even though your cat monitoring will still not be ready. Thus if your state requires ALL monitors to be ready, you will not pass. Some states allow 1 not ready, in which case you can pass assuming everything else is in working order (and some states there is no check at all).
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03-30-2020, 07:28 AM | #19 | |
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For anyone questioning the flex section, we have literally thousands of these in the wild and not one of them has failed or created adverse effects due to the lack of expansion bellow (it's not a flex section). Any reputable retailer on this shop will stand by my claim |
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03-30-2020, 09:22 AM | #20 | ||
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04-05-2020, 07:33 AM | #21 | |
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Ps: car is 435i with ewg. No flex pipe. |
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