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Technical Topics B58 6-Cylinder Turbo Engine / Drivetrain / Exhaust Modifications MPE + VRSF catted dp + exhaust flap mod

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      03-21-2020, 09:13 AM   #1
M340_pilot
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MPE + VRSF catted dp + exhaust flap mod

Might as well jump on all the exhaust threads. Ordered the car with MPE and took delivery last November, did the exhaust flap mod earlier this year and no lights or issues. Yesterday I finally installed a VRSF catted dp. What an awesome difference. Car has not been dyno'd or tracked so I don't have any quantitative info to post. Will take/post a video later today.

I went with the catted version bc I'm undecided on which tune to get and frankly I didn't want it "really" loud. The install was pretty easy and straight forward. Remove the air box, 1 v-band clamp, 1 mid-pipe clamp and 2 nuts. Took a couple hours max. I had to let the car cool down completely to get the V-band clamp off and I did have to use a pipe expander (borrowed from auto parts store) to get the dp to slide into the mid-pipe. The only gotcha was a clip above the 2 main bracket nuts that I didn't notice. Once I pried it up with a screwdriver the dp came right out. Plenty of room even with the O2 sensors installed.
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      03-21-2020, 09:34 AM   #2
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I have been debating on purchasing VRSF catted DP for awhile. I was little apprehensive because of the fitment. Could you comment on fitment?

cant wait for videos later. I also have a MPE on my m340i
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      03-21-2020, 10:39 AM   #3
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zero issues with fitment other than opening up the mid-pipe about 1/16". hang it from the bracket, slide it into the mid-pipe, bolted the mid-pipe back up (one nut) and the v-band went on no problem. I started it up while still on the ramps to do a leak check and it's good. couldn't be more satisfied so far. I wanted to ceramic coat it first but I couldn't wait so oh well.

bought it from extreme power house. slight back order but they sent me weekly email updates.

Last edited by M340_pilot; 03-21-2020 at 10:58 AM.. Reason: spelling
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      03-21-2020, 02:50 PM   #4
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as good I can get with a phone. as others have commented, the video doesn't due it justice.

link won't show up but the video is uploaded to Vimeo. search "M340i with MPE and VRSF (catted dp) cold start"

Last edited by M340_pilot; 03-21-2020 at 03:02 PM.. Reason: link not showing up
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      03-22-2020, 07:24 AM   #5
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Quote:
Originally Posted by seahawker View Post
as good I can get with a phone. as others have commented, the video doesn't due it justice.

link won't show up but the video is uploaded to Vimeo. search "M340i with MPE and VRSF (catted dp) cold start"
Try using the microphone on the headphones that came with it
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      03-22-2020, 08:22 AM   #6
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Quote:
Originally Posted by jstnstr View Post
Quote:
Originally Posted by seahawker View Post
as good I can get with a phone. as others have commented, the video doesn't due it justice.

link won't show up but the video is uploaded to Vimeo. search "M340i with MPE and VRSF (catted dp) cold start"
Try using the microphone on the headphones that came with it
I'll give it a shot today. BTW, do I need to accumulate a certain number of posts before being able to post links? Looking for suggestions to share the audio.
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      03-22-2020, 08:42 AM   #7
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Quote:
Originally Posted by seahawker View Post
Quote:
Originally Posted by jstnstr View Post
Quote:
Originally Posted by seahawker View Post
as good I can get with a phone. as others have commented, the video doesn't due it justice.

link won't show up but the video is uploaded to Vimeo. search "M340i with MPE and VRSF (catted dp) cold start"
Try using the microphone on the headphones that came with it
I'll give it a shot today. BTW, do I need to accumulate a certain number of posts before being able to post links? Looking for suggestions to share the audio.
No you can embed the video in a post without having to link it
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      03-23-2020, 09:59 AM   #8
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https://vimeo.com/399490821

Here is the link. It sounds like it could be a great setup, but you only posted a video of startup/idle...

I'm sure a lot of people here would want to hear revs in different driving modes.
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      03-23-2020, 07:33 PM   #9
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https://vimeo.com/399746515

here is the cold start up link too
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      03-24-2020, 11:24 AM   #10
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Congrats OP

Quote:
Originally Posted by longlasting View Post
I have been debating on purchasing VRSF catted DP for awhile. I was little apprehensive because of the fitment. Could you comment on fitment?

cant wait for videos later. I also have a MPE on my m340i
Its on sale till the end of this month
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      03-24-2020, 12:07 PM   #11
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Quote:
Originally Posted by mike@x-ph.com View Post
Congrats OP



Its on sale till the end of this month
is there a code for the VRSF catted?
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      03-24-2020, 12:54 PM   #12
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Quote:
Originally Posted by mike@x-ph.com View Post
Congrats OP



Its on sale till the end of this month
Mike, appreciate the great customer service and updates throughout the process.
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      03-24-2020, 02:13 PM   #13
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Quote:
Originally Posted by ChOy BoY View Post
is there a code for the VRSF catted?
you jinxed me...just got a 18001 (lean code) today and it won't clear with Bimmerlink.
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      03-24-2020, 02:18 PM   #14
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Quote:
Originally Posted by seahawker View Post
you jinxed me...just got a 18001 (lean code) today and it won't clear with Bimmerlink.
lol i meant it for a coupon code for the VSRF sale to X-PH hahah..

but thats odd..shouldn't that not be happening?!
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      03-24-2020, 02:31 PM   #15
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Quote:
Originally Posted by ChOy BoY View Post
lol i meant it for a coupon code for the VSRF sale to X-PH hahah..

but thats odd..shouldn't that not be happening?!
haha. gotcha.

shouldn't be happening but there is no guarantee. maybe I need to just get a tune too and make it go away or try to space the O2 sensor out.
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      03-24-2020, 06:08 PM   #16
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Quote:
Originally Posted by seahawker View Post
Mike, appreciate the great customer service and updates throughout the process.
My pleasure
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      03-24-2020, 10:51 PM   #17
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Quote:
Originally Posted by seahawker View Post
you jinxed me...just got a 18001 (lean code) today and it won't clear with Bimmerlink.
Disappointing to hear you got the CEL. Active Autowerke appears to guarantee no CEL on their DP but it's like 900$... is it worth it, and does anyone have it and can vouch for this? Or just get catless version with tune and call it a day?
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      03-25-2020, 09:22 AM   #18
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Quote:
Originally Posted by NoTanks52 View Post
Quote:
Originally Posted by seahawker View Post
you jinxed me...just got a 18001 (lean code) today and it won't clear with Bimmerlink.
Disappointing to hear you got the CEL. Active Autowerke appears to guarantee no CEL on their DP but it's like 900$... is it worth it, and does anyone have it and can vouch for this? Or just get catless version with tune and call it a day?
With catless DownPipe at low revs a ringing may occur (resonance from the exhaust). I would like to know from the author. With this combination DownPipe 200Cell + MPE Muffler, is there any resonance?
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      03-25-2020, 06:53 PM   #19
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Quote:
Originally Posted by NoTanks52 View Post
Disappointing to hear you got the CEL. Active Autowerke appears to guarantee no CEL on their DP but it's like 900$... is it worth it, and does anyone have it and can vouch for this? Or just get catless version with tune and call it a day?
If your car is flash tuned, it will take care of the CEL. If your car is stock or uses a piggyback then Active Autowerke downpipe is certainly worth it.

I can vouch for it as we have many customers using it without a single issue reported
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      03-26-2020, 11:40 AM   #20
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Quote:
Originally Posted by Denys_BMW View Post
With catless DownPipe at low revs a ringing may occur (resonance from the exhaust). I would like to know from the author. With this combination DownPipe 200Cell + MPE Muffler, is there any resonance?
no resonance or drone. if this combo didn't throw a CEL it would be the perfect setup IMO. we don't have emission here so I can't speak to that.

The only thing I don't like is the cold start. Def getting that deleted with a tune.

Last edited by M340_pilot; 03-26-2020 at 11:45 AM.. Reason: update
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      03-26-2020, 11:44 AM   #21
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Quote:
Originally Posted by mike@x-ph.com View Post
If your car is flash tuned, it will take care of the CEL. If your car is stock or uses a piggyback then Active Autowerke downpipe is certainly worth it.

I can vouch for it as we have many customers using it without a single issue reported
I've been planning to get a tune...just wanted to wait a few more months/miles before doing it. Now I'm trying to figure out if I go with mission performance or someone local in Tampa/Orlando. Mailing my ECU to California isn't really doable unless I take some time off work.
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      03-26-2020, 12:16 PM   #22
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Quote:
Originally Posted by seahawker View Post
I've been planning to get a tune...just wanted to wait a few more months/miles before doing it. Now I'm trying to figure out if I go with mission performance or someone local in Tampa/Orlando. Mailing my ECU to California isn't really doable unless I take some time off work.
Why dont you wait till Bootmod3 is available?
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