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lokchoy
18-09-2005, 02:25 AM
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
18-09-2005, 08:02 AM
Dont even bother with AUDM ITR headers, theyre only lighter than VtiR nothing else.
ONV73C
18-09-2005, 09:49 PM
100% get the JDM 4-1
Speeder
18-09-2005, 10:01 PM
AUDM is cast iron which are heavier
JDM is SS are lighter = my pick
newmski
18-09-2005, 10:12 PM
:pits JDM = its better
locote
18-09-2005, 10:14 PM
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
18-09-2005, 10:33 PM
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
19-09-2005, 09:35 AM
96whp before 103whp after. went up to 110whp later when i fitted a 2.5 inch exhaust
tRipitaka
19-09-2005, 10:55 AM
get the JDM 4-1 dc2r header..
proven gains..
best bang for buck according to hondar
EGB16A
19-09-2005, 11:04 AM
does anyone have any links to header comparison posts etc? i'm mainly interested in jdm vs toda vs mugen....
thanks guys
lokchoy
20-09-2005, 12:48 AM
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**
20-09-2005, 12:55 AM
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
hondar
20-09-2005, 01:14 PM
get the JDM 4-1 dc2r header..
proven gains..
best bang for buck according to hondar

its not only me,search around the net. you will find similar claim. :D
locote
20-09-2005, 01:55 PM
what gains do TypeRs get from just the header change from aus to jdm??
r`Geno
20-09-2005, 02:23 PM
what gains do TypeRs get from just the header change from aus to jdm??

Realistically, about 2-5kw.
locote
20-09-2005, 02:26 PM
what bout with tuning?
r`Geno
20-09-2005, 03:52 PM
Tuning would depend on what other mods you may have, if it's just the header you're adding I wouldn't bother with tuning.

Btw, I'd better clear up that comment before, I meant about 2-5kw at the wheels.
locote
20-09-2005, 03:56 PM
sound good
i was looking at hte header test page and i think valua for money are the DC 4-1 they are a exact copy of jdm's but they get 3 extra hp and torque but they cost like 200 dolars less