M8 Primary Downpipes + Tune

dwing7 · 11-29-2022, 07:49 PM

Hey everyone,

I have a 2022 M8C Gran Coupe, and after a lot of talk with shops and guys around the community, I have been heavily advised to install primary downpipes instead of a full exhaust, as everyone swears that the primary sound restrictions come from the primaries. Currently it sounds nice, but there's a bit of a metallic edge to the sound and it feels like it is holding back a lot of airflow.

I was planning to do a custom set from SSR Performance in Orange County, CA along with a tune from VF Engineering, mostly due to the friends and family benefits I would receive from both.

Has anyone else had experience with any set of primary downpipes? Any info on smell, power gains, and sound increases would be much appreciated!

TheGreatM8 · 11-29-2022, 09:36 PM

Quote:

Originally Posted by dwing7

Hey everyone,

I have a 2022 M8C Gran Coupe, and after a lot of talk with shops and guys around the community, I have been heavily advised to install primary downpipes instead of a full exhaust, as everyone swears that the primary sound restrictions come from the primaries. Currently it sounds nice, but there's a bit of a metallic edge to the sound and it feels like it is holding back a lot of airflow.

I was planning to do a custom set from SSR Performance in Orange County, CA along with a tune from VF Engineering, mostly due to the friends and family benefits I would receive from both.

Has anyone else had experience with any set of primary downpipes? Any info on smell, power gains, and sound increases would be much appreciated!

If it's just sound you're looking for Vic55 only did a resonator delete and is totally happy with that and only a few hundred $$. And sounds great.

Myself and Tenac have both done secondaries and full aftermarket exhaust. We did different exhausts but happy with both.

All 3 of these do not throw a CEL. Your primary's will.
Not that that can't be remedied just making you aware.

In all honesty: Vic, with the res-delete wins in my opinion. I spent about $13K and Tenac probably was close to 1/2 of that. I'm still happy with my decision though.

dwing7 · 11-29-2022, 09:48 PM

Quote:

Originally Posted by TheGreatM8

Quote:

Originally Posted by dwing7

Hey everyone,

I have a 2022 M8C Gran Coupe, and after a lot of talk with shops and guys around the community, I have been heavily advised to install primary downpipes instead of a full exhaust, as everyone swears that the primary sound restrictions come from the primaries. Currently it sounds nice, but there's a bit of a metallic edge to the sound and it feels like it is holding back a lot of airflow.

I was planning to do a custom set from SSR Performance in Orange County, CA along with a tune from VF Engineering, mostly due to the friends and family benefits I would receive from both.

Has anyone else had experience with any set of primary downpipes? Any info on smell, power gains, and sound increases would be much appreciated!

If it's just sound you're looking for Vic55 only did a resonator delete and is totally happy with that and only a few hundred $$. And sounds great.

Myself and Tenac have both done secondaries and full aftermarket exhaust. We did different exhausts but happy with both.

All 3 of these do not throw a CEL. Your primary's will.
Not that that can't be remedied just making you aware.

In all honesty: Vic, with the res-delete wins in my opinion. I spent about $13K and Tenac probably was close to 1/2 of that. I'm still happy with my decision though.

Thank you for the reply! I am also quite interested in power gains on top of sound, and have come to peace with the week or so without the car during ECU unlock. The blend of desires has been leading me more towards primary downpipes, but I definitely agree that for sound that would be just enough!

Great builds by the way!

TheGreatM8 · 11-30-2022, 12:21 AM

Quote:

Originally Posted by dwing7

Quote:

Originally Posted by TheGreatM8

Quote:

Originally Posted by dwing7

Hey everyone,

I have a 2022 M8C Gran Coupe, and after a lot of talk with shops and guys around the community, I have been heavily advised to install primary downpipes instead of a full exhaust, as everyone swears that the primary sound restrictions come from the primaries. Currently it sounds nice, but there's a bit of a metallic edge to the sound and it feels like it is holding back a lot of airflow.

I was planning to do a custom set from SSR Performance in Orange County, CA along with a tune from VF Engineering, mostly due to the friends and family benefits I would receive from both.

Has anyone else had experience with any set of primary downpipes? Any info on smell, power gains, and sound increases would be much appreciated!

If it's just sound you're looking for Vic55 only did a resonator delete and is totally happy with that and only a few hundred $$. And sounds great.

Myself and Tenac have both done secondaries and full aftermarket exhaust. We did different exhausts but happy with both.

All 3 of these do not throw a CEL. Your primary's will.
Not that that can't be remedied just making you aware.

In all honesty: Vic, with the res-delete wins in my opinion. I spent about $13K and Tenac probably was close to 1/2 of that. I'm still happy with my decision though.

Thank you for the reply! I am also quite interested in power gains on top of sound, and have come to peace with the week or so without the car during ECU unlock. The blend of desires has been leading me more towards primary downpipes, but I definitely agree that for sound that would be just enough!

Great builds by the way!

Completely understand.

Keep us posted on your progress !

Justao · 11-30-2022, 04:43 AM

I currently run stage 2 tune with custom exhaust and catless primaries and secondaries, but I l cannot live with the smell hence replacing primaries back with stock catted ones

Tenac · 11-30-2022, 07:45 AM

Quote:

Originally Posted by dwing7

Hey everyone,

I have a 2022 M8C Gran Coupe, and after a lot of talk with shops and guys around the community, I have been heavily advised to install primary downpipes instead of a full exhaust, as everyone swears that the primary sound restrictions come from the primaries. Currently it sounds nice, but there's a bit of a metallic edge to the sound and it feels like it is holding back a lot of airflow.

I was planning to do a custom set from SSR Performance in Orange County, CA along with a tune from VF Engineering, mostly due to the friends and family benefits I would receive from both.

Has anyone else had experience with any set of primary downpipes? Any info on smell, power gains, and sound increases would be much appreciated!

I would and many here be interested if VF could even tune your locked ECM without shipping overseas. So please keep us posted on that for sure!!!!

But like TheGreatM8 said primary's will cause the CEL, I even tried the O2 extenders with no luck myself....

dwing7 · 11-30-2022, 08:06 AM

Quote:

Originally Posted by Tenac

Quote:

Originally Posted by dwing7

Hey everyone,

I have a 2022 M8C Gran Coupe, and after a lot of talk with shops and guys around the community, I have been heavily advised to install primary downpipes instead of a full exhaust, as everyone swears that the primary sound restrictions come from the primaries. Currently it sounds nice, but there's a bit of a metallic edge to the sound and it feels like it is holding back a lot of airflow.

I was planning to do a custom set from SSR Performance in Orange County, CA along with a tune from VF Engineering, mostly due to the friends and family benefits I would receive from both.

Has anyone else had experience with any set of primary downpipes? Any info on smell, power gains, and sound increases would be much appreciated!

I would and many here be interested if VF could even tune your locked ECM without shipping overseas. So please keep us posted on that for sure!!!!

But like TheGreatM8 said primary's will cause the CEL, I even tried the O2 extenders with no luck myself....

That's definitely an option Nik and I are exploring! Gotta wait a bit cause he's abroad but I'll keep you posted!

11-29-2022, 07:49 PM	#1
dwing7 New Member 12 Rep 11 Posts Drives: 2022 M8 Comp. GC/2021 M550iX Join Date: Aug 2021 Location: Orange County, CA iTrader: (0)	M8 Primary Downpipes + Tune Hey everyone, I have a 2022 M8C Gran Coupe, and after a lot of talk with shops and guys around the community, I have been heavily advised to install primary downpipes instead of a full exhaust, as everyone swears that the primary sound restrictions come from the primaries. Currently it sounds nice, but there's a bit of a metallic edge to the sound and it feels like it is holding back a lot of airflow. I was planning to do a custom set from SSR Performance in Orange County, CA along with a tune from VF Engineering, mostly due to the friends and family benefits I would receive from both. Has anyone else had experience with any set of primary downpipes? Any info on smell, power gains, and sound increases would be much appreciated!
	Appreciate 1 FlorinQCK-2.50 Tweet Quote

11-30-2022, 04:43 AM	#5
Justao Lieutenant 398 Rep 461 Posts Drives: BMW M8 F91 Join Date: Oct 2019 Location: UK iTrader: (0)	I currently run stage 2 tune with custom exhaust and catless primaries and secondaries, but I l cannot live with the smell hence replacing primaries back with stock catted ones
	Appreciate 1 FlorinQCK-2.50 Quote