Downpipe resonated vs downpipe non-resonated

[THX]

My actual exhaust configuration is:
-ESS high flow 200 cell catted downpipe
-AA midpipe
-AKRA slip-on

I want a full catless exhaust and i bought AR DESIGN downpipes RESONATED version.
The sound af my m4 is very clean, zero raspy and bass sound....i hate raspy sound.

The question is: Are resonated downpipes really best sounding of non-resonated downpipe?

Ar design non-resonated:



Ar design resonated:

[THX]

I will post a video when i install them....
Anyone that already installed them?

[mike@x-ph.com]

Resonators will definitely make a difference ... Sending you your downpipes soon

[CPWINCH]

Resonated downpipes are perfect for this engine!!! They will not restrict flow and will remove rasp. Great choice.

[steven26]

Let us know how it sounds. I'm debating on changing my catless downpipes to those resonated downpipes also.

[THX]

Will do.
Mike@x-ph.com send my dp!!

[mike@x-ph.com]

Originally Posted by THX

Will do.
Mike@x-ph.com send my dp!!

Shipping out today

[mike@x-ph.com]

Tracking number sent

[idocm4]

Will resonated downpipes throw a CEL?

[RACEM4TE]

Originally Posted by idocm4

Will resonated downpipes throw a CEL?

I dont think so if you have a tune.

[mike@x-ph.com]

Originally Posted by idocm4

Will resonated downpipes throw a CEL?

Yes

Originally Posted by RACEM4TE

I dont think so if you have a tune.

If you have a tune (JB4 or BM3), it will suppress the code even if you are using catless downpipes

[THX]

OMG they are very big! 3 TRUE inch!
Tommorow i install them.

[idocm4]

Originally Posted by THX

OMG they are very big! 3 TRUE inch!
Tommorow i install them.

Nice! Give us some feedback once installed.

[mike@x-ph.com]

Originally Posted by THX

OMG they are very big! 3 TRUE inch!
Tommorow i install them.

Stunning!

[THX]

Installed.
Large problems with fitment.
I had to make a new hole for one sonda lambda because wrong fitment.
I had to cut underlayer under engine....because one pipe was too big!
But now the pipes is installed.
The sound is 20% louder that before but is low frequency sound.
Deep sound like a true race car with noticeble turbo spool.
Videos will come in a few days.

[BoxKing]

Originally Posted by THX

Installed.
Large problems with fitment.
I had to make a new hole for one sonda lambda because wrong fitment.
I had to cut underlayer under engine....because one pipe was too big!
But now the pipes is installed.
The sound is 20% louder that before but is low frequency sound.
Deep sound like a true race car with noticeble turbo spool.
Videos will come in a few days.

I was about to pull the trigger on these last night, and thank god I saw this first. No way do I want to shell out that much coin for a poor product.

I'm subscribed to see what the distributors/manufacture of AR will say/do to rectify this issue.

[THX]

This a photo of problem with sonda lambda hole:



Sonda don't fit because the other pipe is too near....
Only solution is: close the hole and make another hole in another point of pipe.

[mike@x-ph.com]

Originally Posted by THX

Installed.
Large problems with fitment.
I had to make a new hole for one sonda lambda because wrong fitment.
I had to cut underlayer under engine....because one pipe was too big!
But now the pipes is installed.
The sound is 20% louder that before but is low frequency sound.
Deep sound like a true race car with noticeble turbo spool.
Videos will come in a few days.

Sorry to hear that, i will let AR know about this issue

[SuckaGDog]

Lol.. You think AR would have caught that during their product testing!

[mike@x-ph.com]

Originally Posted by SuckaGDog

Lol.. You think AR would have caught that during their product testing!

First time we get this issue, maybe it was just with OP's downpipe.

I already spoke to AR today and they are rechecking their jig first thing Monday. This will not be an issue for any future orders.

[THX]

Problem with underlayer:

[THX]

I have another problem
In cold start there are some heavy vibration....very very hard vibration inside the cabin.
It isn't accettable.
When the cold start finish no problem, the sound is awesome.
Any ideas for resolve this issue?