Any performance/power advantages with a quad exhaust over a dual exhaust

[IMASINNER]

I know there are lots of threads on dual exhausts and quad exhausts, but are there really any power/perfomance gains with a quad exhaust? Do two more pipes give you anything else or is it really just "the look".

[bryce]

for teh exhausts that are currently on the market, it's just for looks. you may even get better performance from a single side exit exhaust.


i've heard rumors of a quad exhaust being released in spring time, that might be a better design. we'll have to wait and see.





in the future, please use the general intake,exhaust,tune ETC thread for questions like this

[IMASINNER]

Originally Posted by bryce

for teh exhausts that are currently on the market, it's just for looks. you may even get better performance from a single side exit exhaust.


i've heard rumors of a quad exhaust being released in spring time, that might be a better design. we'll have to wait and see.





in the future, please use the general intake,exhaust,tune ETC thread for questions like this

thats what i thought. thanks.

Isn't this the 135 exhaust and drivetrain thread?

[MarkR171]

Quad on the 1 series is just for looks. There are no gains, I'd even say it's worse than running the regular dual setup because of the extra weight of the quad. The only reason two smaller pipes are used from the midpipes back is for space reasons. A single, wider pipe would be "taller" and be lower to the ground than two side-by-side pipes that are slightly smaller in diameter.

[SiN55]

I just can't beleive that someone can ask somethin like this, NHF.

[The1]

Originally Posted by SiN55

I just can't beleive that someone can ask somethin like this, NHF.

How are people supposed to learn if they don't ask?

[bryce]

Originally Posted by IMASINNER

thats what i thought. thanks.

Isn't this the 135 exhaust and drivetrain thread?

sorry, should have clarified. i mean the general questions thread HERE




thanks

[cwg]

my recall from reading tuning theory on NA cars is that for best performance on a straight six a single exhaust pipe produces the most power because of the scavenging effects created by the pressure wave. Not sure to what extent this hold true with Turbo cars.

[InsaneSkippy]

Originally Posted by bryce

sorry, should have clarified. i mean the general questions thread HERE




thanks

Burying all those questions in one thread gets annoying though.

When people search for stuff, they're likely to display search results as threads, not posts.

So if someone search's "Quad vs Dual Exhaust" it's a lot easier for someone to find a thread on it, rather than being told to look in some thread that has pages of useless (in the sense that, the person is only looking for exhaust info, not all other info about tuning the engine).

[SiN55]

Originally Posted by The1

How are people supposed to learn if they don't ask?

Reading first, there is a million of posts on every subject.

[The1]

Originally Posted by SiN55

Reading first, there is a million of posts on every subject.

I have not yet come across someone asking specifically this question yet...

so i thought it was an original question.

Guess i was wrong. Shame on the original poster for doing such a thing...

Just kidding original poster

[BrokenVert]

Originally Posted by MarkR171

The only reason two smaller pipes are used from the midpipes back is for space reasons. A single, wider pipe would be "taller" and be lower to the ground than two side-by-side pipes that are slightly smaller in diameter.

Thats what it is now...but us N54 guys have two pipes because we have two snails.

1 pipe per turbo is usually the best for flow. But with the N55 they wanted to not design as many new parts as possible so the single dp goes to the dual pipes.


But for the OP. The quads on the 1 series are all looks as its just four pipes comming out of the muffler on the left side instead of just two like the normal 135.

Those extra pipes only add weight and no nothing to increase flow. h

[bryce]

Originally Posted by InsaneSkippy

Burying all those questions in one thread gets annoying though.

When people search for stuff, they're likely to display search results as threads, not posts.

So if someone search's "Quad vs Dual Exhaust" it's a lot easier for someone to find a thread on it, rather than being told to look in some thread that has pages of useless (in the sense that, the person is only looking for exhaust info, not all other info about tuning the engine).

i meant more for asking questions, not for searching through that thread (that would take some time). it's all good though

[IMASINNER]

Thanks Everyone.


Merry Christmas