Header Changed!

During driving the car some time, I noticed that the response of the car at 3k~5k RPM is really poor. After some research done on the Web, I found that changing the stock header (or called exhaust extractor may help). So went searching the part in IPOH.
Below is some of my findings:
1) Steel 4-2-1 for B16A. (Maker A)
- Price RM 280 and below.
- found poor welding quality, weld intrusion to the flow hole is more than 5mm.
- Tube and plate plate and hole mismatch more than 7mm delta.














2) Alloy Mugen Replica 4-1 for B18C. (Maker B)
- Price RM7x0+.
- Very good Argon welding, very good quality.
- have QC sticker label.



















3) Steel Mugen Replica 4-1 for B18C. (Maker B)
- Price RM3x0+
- Good welding quality almost no welding intrusion to the flow hole
- Plate and tube hole mismatch is less than 3mm.
- minor flaw noticed on this unit (at the hole of the first primary tube) and solved by grinding.
- have QC sticker. (Confirm is same supplier as the No 2 header.)










































Since i am not sure what the effect it, it would be crazy to dump 700++ on it. So i took the No 3 option. The result is good, the surge of pickup at 3k to 5k is noticeably improved. The engine is much more rev happy. I did not really push the car today so no comment yet, much of this is based on feeling. I have to thank James for recommending the 4-1 to me.
Note: Item (2) and (3) is from the same supplier so the design and workmanship is the same but only the material is different. Item (2) would be more a bling-bling to me me and both will fit as stock unit (no cutting or modification required) so no need to guess which one i took... Picture will tell. I even got my exhaust modified to enable me to swap the S flow or the straight flow HKS. Will put on the HKS straight flow on ONE fine and test it at Cameron :).

Someone is selling a MUGEN 4-1 at 2.5k:
(check out the pictures in the link page below)
http://www.zerotohundred.com/newforums/engine-and-performance/278812-wts-brand-new-mugen-header-4-1-for-b16-18-a.html

Recommended Exhaust System shop:
POI Auto Enterprise
012-4617898 (Mr KC Poi)
05 3233963
651, Jln Pasir Putih, Ipoh Perak.
Note: My whole set of exhaust system is done by this shop and I can vouch for the workmanship.
Just tell him Orange Civic "Wong" Recommend (from Blog la).