Hey guys
Well I FINALLY (after almost a year and a half) got my JDM DC5r headers fitted to my car. As some of you maybe thinking “pfft, stock JDM headers… so what” well there is actually a BIG difference when it comes to AUDM and JDM
JDM: 4-2-1 construction, high flow cat, perfectly mates upto aftermarket exhausts
AUDM: 4-1 (the 1 section looks like a dump pipe).
After taking the AUDM headers off they are actually a 4-2-1 construction, as there is something wedged in the middle of the pipe. Also the pipes that come off the head are very small. And you can see why putting on aftermarket headers on an AUDM makes such an improvement.
After looking at the JDM headers, and then a set of Toda’s and so on, you can see the similarities. The only differences being the material used, and diameter of the pipe used (aftermarket being larger).
But less about the actually headers, and how they actually go on the car. Of course with having a design like this, top end is the part that is going to be most affected, and there is actually a noticeable improvement. The higher revs seem more free flowing.
After having them on the car for a few days and driving in a few different conditions, there is an all-round improvement. The entire rev range seems to have benefited.
Only “complication” to the headers was the front sway bar having to be changed and the exhaust sensor having to be extended. But you’ll find you’ll have to do this with every aftermarket header you get… and upgrading your sway bars is about the most satisfying modification you’ll ever do to your DC5r (just make sure you do the back one to)
For those of you with the stock AUDM headers wanting to upgrade, but not sure what to go with, I would recommend you look into the JDM header option. They are a great design, a fair bit cheaper then all aftermarket options (even 2nd hand ones) and don’t necessary need an aftermarket ECU to get them to run right.
Enjoy the read guys… and if you have any more questions just ask.
Robi
Well I FINALLY (after almost a year and a half) got my JDM DC5r headers fitted to my car. As some of you maybe thinking “pfft, stock JDM headers… so what” well there is actually a BIG difference when it comes to AUDM and JDM
JDM: 4-2-1 construction, high flow cat, perfectly mates upto aftermarket exhausts
AUDM: 4-1 (the 1 section looks like a dump pipe).
After taking the AUDM headers off they are actually a 4-2-1 construction, as there is something wedged in the middle of the pipe. Also the pipes that come off the head are very small. And you can see why putting on aftermarket headers on an AUDM makes such an improvement.
After looking at the JDM headers, and then a set of Toda’s and so on, you can see the similarities. The only differences being the material used, and diameter of the pipe used (aftermarket being larger).
But less about the actually headers, and how they actually go on the car. Of course with having a design like this, top end is the part that is going to be most affected, and there is actually a noticeable improvement. The higher revs seem more free flowing.
After having them on the car for a few days and driving in a few different conditions, there is an all-round improvement. The entire rev range seems to have benefited.
Only “complication” to the headers was the front sway bar having to be changed and the exhaust sensor having to be extended. But you’ll find you’ll have to do this with every aftermarket header you get… and upgrading your sway bars is about the most satisfying modification you’ll ever do to your DC5r (just make sure you do the back one to)
For those of you with the stock AUDM headers wanting to upgrade, but not sure what to go with, I would recommend you look into the JDM header option. They are a great design, a fair bit cheaper then all aftermarket options (even 2nd hand ones) and don’t necessary need an aftermarket ECU to get them to run right.
Enjoy the read guys… and if you have any more questions just ask.
Robi
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