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      02-03-2021, 10:59 AM   #89
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Just pulled the trigger on the ARM DPs!! Thanks for all the input. Will update with results after install.
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      02-03-2021, 02:11 PM   #90
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Quote:
Originally Posted by Makivelli View Post
Just pulled the trigger on the ARM DPs!! Thanks for all the input. Will update with results after install.
My pleasure, congrats
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      02-03-2021, 09:59 PM   #91
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Quote:
Originally Posted by Makivelli View Post
So I have the Resonated EL and ZCP exhaust and was debating on getting the resonated ARM or non resonated.

I am worried it will be too quiet, are they at least louder than OEM catted? Would you also recommend going for both resonated? It's sounding pretty right!!
So I just finished my arm resonated dp with AA EQL resonated midpipe (non ZCP muffler) and it sounds absolutely nuts!! Nothing at all like any other s55 setup. Probably only bested by a single turbo setup. Do not hesitate if you want ultra smooth clean sounding exhaust. It very closely reminds me of a tame rb26. You will not be disappointed.
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      02-03-2021, 10:37 PM   #92
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Quote:
Originally Posted by Rjpacman View Post
So I just finished my arm resonated dp with AA EQL resonated midpipe (non ZCP muffler) and it sounds absolutely nuts!! Nothing at all like any other s55 setup. Probably only bested by a single turbo setup. Do not hesitate if you want ultra smooth clean sounding exhaust. It very closely reminds me of a tame rb26. You will not be disappointed.

Sound clips please. Tempted to try with my akra exhaust setup...
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      02-04-2021, 09:40 AM   #93
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Sound clips please.
+1
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      02-04-2021, 04:36 PM   #94
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Quote:
Originally Posted by Rjpacman View Post
So I just finished my arm resonated dp with AA EQL resonated midpipe (non ZCP muffler) and it sounds absolutely nuts!! Nothing at all like any other s55 setup. Probably only bested by a single turbo setup. Do not hesitate if you want ultra smooth clean sounding exhaust. It very closely reminds me of a tame rb26. You will not be disappointed.
Coming from RBs and 2Js for years this is exactly what I was hoping for! The DPs are ordered just waiting for them to ship now and then ill get some sound clips and share.
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      02-05-2021, 09:54 AM   #95
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Quote:
Originally Posted by Makivelli View Post
Coming from RBs and 2Js for years this is exactly what I was hoping for! The DPs are ordered just waiting for them to ship now and then ill get some sound clips and share.
Looking forward to your feedback
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      02-08-2021, 04:28 PM   #96
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Install will be soon. Just need FedEx to drop off my midpipes. Thanks Mike @ x-ph for the quick shipping!

#downpipeporn
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      02-08-2021, 09:42 PM   #97
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Quote:
Originally Posted by Azurite_F80 View Post
Install will be soon. Just need FedEx to drop off my midpipes. Thanks Mike @ x-ph for the quick shipping!

#downpipeporn
is this the resonated version and which midpipe did you order ? sound clips asap !!!
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      02-09-2021, 02:46 AM   #98
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I'm installing mine tomorrow! Stand by for videos and pics on IG : @juicedf80
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      02-09-2021, 08:37 AM   #99
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Quote:
Originally Posted by B3am3rBK View Post
is this the resonated version and which midpipe did you order ? sound clips asap !!!
Yes this is the resonated version. AA Single Mid to pair with the Dinan rear. Sound clips as soon i get this on dyno
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      02-18-2021, 02:34 PM   #100
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With those of you who got the catted version, i take it they install the cats in place of the resonators? Are the cats functional enough to stop the CEL?
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      02-18-2021, 08:19 PM   #101
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Quote:
Originally Posted by Azurite_F80 View Post
Install will be soon. Just need FedEx to drop off my midpipes. Thanks Mike @ x-ph for the quick shipping!

#downpipeporn
Looks great, congrats!!

Quote:
Originally Posted by marauder1 View Post
With those of you who got the catted version, i take it they install the cats in place of the resonators? Are the cats functional enough to stop the CEL?
The cats won't stop the CEL if the car is not flash tuned
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      03-02-2021, 06:12 PM   #102
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Just received my ARM catless downpipes today. They look great. Having them installed on Monday. Thanks to mike@x-ph.com for the excellent service and fast shipping.
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Last edited by Mikez306; 03-02-2021 at 07:09 PM..
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      03-03-2021, 11:36 AM   #103
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Quote:
Originally Posted by Mikez306 View Post
Just received my ARM catless downpipes today. They look great. Having them installed on Monday. Thanks to mike@x-ph.com for the excellent service and fast shipping.
My pleasure, congrats
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      03-03-2021, 11:59 AM   #104
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These look great and for the price
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      03-03-2021, 04:06 PM   #105
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Just ordered mine from Mike, will update with quality, fitment, and sound
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      03-04-2021, 07:05 AM   #106
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Will the catted versions pass emissions? Are they high flow enough to run stage 2?
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      03-04-2021, 09:03 AM   #107
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Quote:
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Will the catted versions pass emissions? Are they high flow enough to run stage 2?
Sport cats don't pass emissions...and I have the high quality ER hi-flow cat DPs. I ran a whole week and then got the dreaded CEL.
... ... ...

I run Stage 2 and 2H with stock cats and also sport cats...no problem either way. I use BM3 to overlook the O2 sensor reading high when the sport cats are on.
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      03-04-2021, 09:10 AM   #108
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Just ordered mine from Mike, will update with quality, fitment, and sound
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      03-04-2021, 11:01 AM   #109
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Quote:
Originally Posted by TopJimmy View Post
Sport cats don't pass emissions...and I have the high quality ER hi-flow cat DPs. I ran a whole week and then got the dreaded CEL.
... ... ...

I run Stage 2 and 2H with stock cats and also sport cats...no problem either way. I use BM3 to overlook the O2 sensor reading high when the sport cats are on.
Has anyone tried using a high quality HJS Euro 6 HFC?
Fabspeed has been using them on "P" cars with no CEL issues even on the new 992 turbos. IMHO, these metallic cats being sold on DP's are not super high quality like GESI or HJS. Metallic HFC's which are lower quality from Magnablow can't compete with a GESI or HJS.

This is where I'm torn, should I use a HFC from HJS sold overseas that have the ECE cert. (200 cell) or should I add ARM resonated DP, add an HJS HFC (which I have 2 new ones) midway on VRSF midpipe and move rear O2's further downstream. I've done option 2 on all my previous cars and had no latency issues with sensors or fuel trim with no CEL and tuned. Requires 2 x Lambda extensions for installation on our cars.

Links:
https://hg-motorsport.de/en/products...-bmw-m3/m4-f8x

https://www.racdyn-usa.com/PROD/130+10+55+450.html

Mike- Can you get the Racing Dynamics or does Fabspeed make a catted DP for M3/4?
Fellas, any thougths?
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Last edited by Wanted_M; 03-04-2021 at 11:48 AM..
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      03-05-2021, 08:00 AM   #110
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Quote:
Originally Posted by Wanted_M View Post
Quote:
Originally Posted by TopJimmy View Post
Sport cats don't pass emissions...and I have the high quality ER hi-flow cat DPs. I ran a whole week and then got the dreaded CEL.
... ... ...

I run Stage 2 and 2H with stock cats and also sport cats...no problem either way. I use BM3 to overlook the O2 sensor reading high when the sport cats are on.
Has anyone tried using a high quality HJS Euro 6 HFC?
Fabspeed has been using them on "P" cars with no CEL issues even on the new 992 turbos. IMHO, these metallic cats being sold on DP's are not super high quality like GESI or HJS. Metallic HFC's which are lower quality from Magnablow can't compete with a GESI or HJS.

This is where I'm torn, should I use a HFC from HJS sold overseas that have the ECE cert. (200 cell) or should I add ARM resonated DP, add an HJS HFC (which I have 2 new ones) midway on VRSF midpipe and move rear O2's further downstream. I've done option 2 on all my previous cars and had no latency issues with sensors or fuel trim with no CEL and tuned. Requires 2 x Lambda extensions for installation on our cars.

Links:
https://hg-motorsport.de/en/products...-bmw-m3/m4-f8x

https://www.racdyn-usa.com/PROD/130+10+55+450.html

Mike- Can you get the Racing Dynamics or does Fabspeed make a catted DP for M3/4?
Fellas, any thougths?
Where do you get the harness extensions from? I was thinking of doing the same thing but hate creating harnesses and clips. Was looking for a pre made solution.
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