jdm audm itr header

[lokchoy]

hey im just wondering about the jdm 4-1 and audm 4-2-1 itr header
are they both the same quality?
ive heard that the jdm is 2.5" and aus is 2.25" any reason to that?
but in retrospect they both give gains at top and mid end respectively?
tossing up to buying some jdm or aus headers
got a 99' vti-r
cheers

[Chi]

Dont even bother with AUDM ITR headers, theyre only lighter than VtiR nothing else.

[ONV73C]

100% get the JDM 4-1

[Speeder]

AUDM is cast iron which are heavier
JDM is SS are lighter = my pick

[newmski]

its JDM = its better

[locote]

audm are not cast,
i got a set for my gsi for a 100 bucks felt the difference straight way, and the engine reved and sounded angrier.
audm are ssteel and weigh bout 7kg.
but if your looking at paying retail price get jdm. but for 100buck and the gain i got it was well worth it.
they are only temporary anyways.
look at my profile photos theres a photo of them

[Chi]

audm are not cast,
i got a set for my gsi for a 100 bucks felt the difference straight way, and the engine reved and sounded angrier.
audm are ssteel and weigh bout 7kg.
but if your looking at paying retail price get jdm. but for 100buck and the gain i got it was well worth it.
they are only temporary anyways.
look at my profile photos theres a photo of them

might be a mental thing lol.

Did u actually dynoed it? With results to back it up?

[locote]

96whp before 103whp after. went up to 110whp later when i fitted a 2.5 inch exhaust

[tRipitaka]

get the JDM 4-1 dc2r header..
proven gains..
best bang for buck according to hondar

[EGB16A]

does anyone have any links to header comparison posts etc? i'm mainly interested in jdm vs toda vs mugen....
thanks guys

[lokchoy]

ahh cheers guys
anyone know if the jdm itr 4-1 headers will directly bolt on and replace stock vti-r headers?
or do i have get new cat and catback

[**Ghost**]

audm are not cast,
i got a set for my gsi for a 100 bucks felt the difference straight way, and the engine reved and sounded angrier.
audm are ssteel and weigh bout 7kg.
but if your looking at paying retail price get jdm. but for 100buck and the gain i got it was well worth it.
they are only temporary anyways.
look at my profile photos theres a photo of them

agreed...audm is not cast, the headers show individual tubular piping (unlike stock vtir, which is a huge "blob" of metal) made of stainless steel

and yes headers alone provide good gains by itself, mroe once catback installed