Smooth exaust note.

[Andreu]

I was wondering what is the best thing to do if i wanted to get as smooth of a note as possible. its not that i dont like the rumble its that i like a smoother note more. any suggestions?

[panamajack]

equal length headers

[boostsr20]

equal length headers

[nekdut]

Or a Twin scroll turbo (and accompanying headers/up pipe).

[panamajack]

AFAIK twin scroll uses e/l headers

[SBT]

AFAIK twin scroll uses e/l headers

 

I think by application, they have to be EL, which would give you the smoother sound you're looking for.

SBT

[SBT]

Don't EL headers simply turn our low displacement 4 bangers into riced out civic sounding cars?

 

To me, "smooth" is heard on cars like the RS4, but without a V8, ours aren't going to sound like that...

 

I think that has to do more with the 6" rear melon launchers (with the attendant racket producing plug) that usually accompany said "riced out civic sonding cars"...

 

"Smooth" appears to be relatively subjective.

SBT

[whitetiger]

EL headders with no cats and prodrive mufflers FTW

[GTTuner]

20thGTItoLGT has unequal length headers. I swear it sounds like it has a misfire at idle.

[SeeeeeYa]

Or a Twin scroll turbo (and accompanying headers/up pipe).

 

TS=EL

 

My APS EL headers are used in both single scroll and twin scroll installations, with different up pipe sections being the difference.

 

My exhaust note is definitely 'smoother' than a stock turbo Subaru. At idle, however, the boxer signature is still present.

[wheatleya]

stock

[sirsimon]

+100 on the EL headers

[nekdut]

I think by application, they have to be EL, which would give you the smoother sound you're looking for.

SBT

 

Yes of course, that is why I said "accompanying headers and up pipe".

 

 

Its a fairly different sound that just EL headers and a single scroll up pipe too.

[qikslvr]

My UL headers changed the note a little to the smoother side, but I've heard the EL's will do much more to smooth it out.