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      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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Quote:
Originally Posted by thejeremyman9 View Post
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.
It has a flex section for this reason.
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      03-25-2020, 08:18 PM   #4
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Quote:
Originally Posted by Logicoeur View Post
It has a flex section for this reason.
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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Quote:
Originally Posted by thejeremyman9 View Post
Quote:
Originally Posted by Logicoeur View Post
It has a flex section for this reason.
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.
No the N55 dp from VRSF has a flex section, at least on the PWG and N20 versions I've seen.
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      03-25-2020, 08:27 PM   #6
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Quote:
Originally Posted by Logicoeur View Post
No the N55 dp from VRSF has a flex section, at least on the PWG and N20 versions I've seen.
The F30 N55 one does not, at least for EWG. There was a thread about this someone was confused about the images, but i am positive the catted and catless ones do not for this model. I researched it extensively when i was considering DPs before i went with fabspeed. I confirmed with user-posted images.

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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Quote:
Originally Posted by Logicoeur View Post
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.
n55 ewg does have a flex section for the 5/6/7 varients

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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Quote:
Originally Posted by nbay89 View Post
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.
It will sound great I'm sure
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      03-26-2020, 11:41 AM   #10
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I have the catless one, sounds amazing with stock exhaust (burbles). As far as emissions goes...i'll let you know in the next month since they are due lol. Worst case swap stock in go to test, put catless back in after.
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      03-26-2020, 11:45 AM   #11
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Quote:
Originally Posted by mike@x-ph.com View Post
Quote:
Originally Posted by nbay89 View Post
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.
It will sound great I'm sure
Thanks Mike. I'm guessing the cel situation is still the same? Some cel with VRSF? I've heard Gintani doesn't throw a cel.
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      03-26-2020, 11:53 AM   #12
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Quote:
Originally Posted by nbay89 View Post
Thanks Mike. I'm guessing the cel situation is still the same? Some cel with VRSF? I've heard Gintani doesn't throw a cel.
If your car is stock, you might get a CEL with VRSF.

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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Quote:
Originally Posted by mike@x-ph.com View Post
Quote:
Originally Posted by nbay89 View Post
Thanks Mike. I'm guessing the cel situation is still the same? Some cel with VRSF? I've heard Gintani doesn't throw a cel.
If your car is stock, you might get a CEL with VRSF.

Fabspeed and Active Autowerke are the only 2 brands I know of that offer no CEL guarantee.
Just an intake and MPE at this point. Rest of the car is stock.
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      03-26-2020, 12:29 PM   #14
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Quote:
Originally Posted by nbay89 View Post
Just an intake and MPE at this point. Rest of the car is stock.
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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I have a catless Dp PWG STYLE mine has the flex n55
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      03-29-2020, 11:21 AM   #16
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Quote:
Originally Posted by nbay89 View Post
Just an intake and MPE at this point. Rest of the car is stock.
Quote:
Originally Posted by mike@x-ph.com View Post
You can either get the Active Autowerke catted pipe or BM3 + VRSF Catted
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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Quote:
Originally Posted by thejeremyman9 View Post
Quote:
Originally Posted by nbay89 View Post
Just an intake and MPE at this point. Rest of the car is stock.
Quote:
Originally Posted by mike@x-ph.com View Post
You can either get the Active Autowerke catted pipe or BM3 + VRSF Catted
Note, the tune will only hide the CEL and you will still not be able to pass emissions.
I've heard about this even with the catted. I'm in PA. Is it a steadfast rule that they pretty much never pass even if they're catted? I know it can be state specific and even garage specific for that matter.
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      03-29-2020, 11:31 AM   #18
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Quote:
Originally Posted by nbay89 View Post
I've heard about this even with the catted. I'm in PA. Is it a steadfast rule that they pretty much never pass even if they're catted? I know it can be state specific and even garage specific for that matter.
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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Quote:
Originally Posted by thejeremyman9 View Post
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.
This issue only occurred on 30 or so catted versions from almost 8 months ago and has been corrected since.

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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Quote:
Originally Posted by Tiago@VRSF View Post
Quote:
Originally Posted by thejeremyman9 View Post
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.
This issue only occurred on 30 or so catted versions from almost 8 months ago and has been corrected since.

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
Tiago, can you speak to the frequency of the cel with the catted VRSF DP installed?
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      04-05-2020, 07:33 AM   #21
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Quote:
Originally Posted by Tiago@VRSF View Post
This issue only occurred on 30 or so catted versions from almost 8 months ago and has been corrected since.

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
Not for me. I bought my vrsf catted downpipe about 6 months ago and got one with the 2nd o2 too far away. I had to buy an o2 extender. This was supposed to b the revised down pipe version.
Ps: car is 435i with ewg. No flex pipe.
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      04-06-2020, 12:12 PM   #22
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Quote:
Originally Posted by Randy Johnson View Post
Not for me. I bought my vrsf catted downpipe about 6 months ago and got one with the 2nd o2 too far away. I had to buy an o2 extender. This was supposed to b the revised down pipe version.
Ps: car is 435i with ewg. No flex pipe.
That wasn't a revised version if it had the o2 issue. The o2 issue has since been resolved
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