Best option for headers + cats

[0-60motorsports]

Rogue engineering is about to make an equal length Sec1 as well if there was enough interest to have it made with cats I'm sure they would make some

I replied to their post and suggested a version with cats to fit the SS V1 headers. Hopefully they do it.

[digger]

incase its not obvious the flow doesnt follow the centreline of the tube (the gas will try and straight line it) so equal centreline length means nothing. The same applies to primaries the effective lneght is different to the centreline length so dont get too hung up on fancy phrases and small differences.

These equal length section I are just a marketing thing to differentiate themself to get people to spend money on shiny things. When you have different length collectors its not a big deal when they are 5 to 6 feet long as its a small percentage difference. In reality bends hurt you so doing stupid things like multple s bends to gain a few inches will probably eliminate any benefit a true eual length may have had.

[nyc951]

Rogue engineering is about to make an equal length Sec1 as well if there was enough interest to have it made with cats I'm sure they would make some

Interested.

[usdmej]

These equal length section I are just a marketing thing to differentiate themself to get people to spend money on shiny things. In reality bends hurt you so doing stupid things like multple s bends to gain a few inches will probably eliminate any benefit a true eual length may have had.

even though sunbeam documents power gains, the novel thing about this product is the higher pitched tone you manage to achieve,

which for the S54 engine, is unheard of

i'll let myself out

[discoelk]

⬆️ The whole point is the sound not a power increase. I think it's pretty unlikely this makes (or loses) any substantial power.

[digger]

so the sound comes from a couple of extra mandrel bends that dont belong?

[discoelk]

If you don't like the idea, that's fine, but it clearly sounds different in videos.

[digger]

If you don't like the idea, that's fine, but it clearly sounds different in videos.

not saying it isnt but there is-nothing to suggest its the equal length concept either. Unless there is a test of identical setup but with the S bend replaced by straightish section its marketing claims

[usdmej]

so the sound comes from a couple of extra mandrel bends that dont belong?

their intention was to add bends to create an equal length exhaust, they don't even mention the change in tone that's just something users have noted

https://sunbeam8.com/2235/

posted earlier in this thread, they compared their equal length decatted, resonated section 1 to what is commonly known as a stock euro section 1

[digger]

their intention was to add bends to create an equal length exhaust, they don't even mention the change in tone that's just something users have noted

https://sunbeam8.com/2235/

posted earlier in this thread, they compared their equal length decatted, resonated section 1 to what is commonly known as a stock euro section 1

That’s what I assumed. So they showed their system is better than a stock one but not that the equal length was responsible for the improvement, maybe they gave theirs a tune and the stock one wasn’t tuned like many people do .
all I’m pointing out is dont get too excited about the next big thing in exhaust tech

[jpy1980]

Question. What's the difference btw running the OEM header/cat and OEM section 1 and someone who has an aftermarket catless header and installs a catted section 1? Is it since the cat is more downstream, there is more power to be made?

[Slideways]

Question. What's the difference btw running the OEM header/cat and OEM section 1 and someone who has an aftermarket catless header and installs a catted section 1? Is it since the cat is more downstream, there is more power to be made?

About 10 hp and 7 ft-lbs of torque

[WestBankM4]

I ordered a set of OEM Euro headers from a board member here, waiting for those to come in. In the meantime I'm collecting the rest of the exhaust system and I'm planning on going catless initially. So far, I've got the,

1. Karbonius CSL Intake
2. OEM Euro headers

In terms of Section 1, I've been researching the equal length pipes that Sunbeam sell and since I've bought a few Rogue Engineering parts, I'm going to jump for their equal length rasp pipe, really curious about the sound. With that said, any suggestions on a section 2 or should I leave it OEM? For shits and giggles I'm thinking of ordering a full titanium exhaust from AliBaba, just to see how the tone works out with the rest of the system.

[9kracing]

Rogue engineering and Alibaba.... poor car.

Once Nick finishes up my Audi exhaust I'm going to see if I can get him to make another run of his equal length section 1s.

https://www.485designs.net/shop-online/p/bmw-e46-m3-equal-length-section-1-exhaust

If anyone wants in LMK.

[kwan_1104]

Rogue engineering and Alibaba.... poor car.

Once Nick finishes up my Audi exhaust I'm going to see if I can get him to make another run of his equal length section 1s.

https://www.485designs.net/shop-online/p/bmw-e46-m3-equal-length-section-1-exhaust

If anyone wants in LMK.

Can he do a catted version?