ok, i'm definitely in the market for a header. i'm stuck b/t a JUN 4-1 and a DC ITR 4-1...i can get each for the same price but i'm wondering which will help me out the MOST!.. here is a list of my mods
mod list:

- JDM B16B Civic Type R Pistons
- JDM B16B Civic Type R Intake and exhaust Cam Shafts
- JDM B16B Civic Type R Valves and Springs and Retainers
- ARP head Studs
- Mini ported Intake manifold by RS Engineering
- Denso Iridium Spark Plugs
- Hyper Ground Wires
- ACT Racing Clutch
- 2.5” Testpipe
- HKS Hiper Exhaust
- Eibach Pro Springs (1.4F, 1.0R Drop)
- Cold Air Intake
- 2000 Civic Si Rims with 195/55/15 Bridgestone Potenza RE92 (85% front 95% rear; off the car)
- 15' Rota Grids Silver w/ Polished Lip w/ 205/50/15 Yokohama Es100
- VIS Racing OEM Carbon Fiber Hood

judging from that can u guys help me determine which will put down the best numbers? thanks...
p.s. don't just say JUN b/c u know it's a big name...i'm just wondering b/c i don't have HUGE built engine and i want what is most beneficial...thanks.

 

The JUN 4-1, assuming it's not that cheap ebay knockoff w/the flex extension, has bigger primaries and an overall bigger ID, that would be more beneficial for you setup. I would look into a Hytech if you have the cash though.

 

Heard alot about the Hytech header also, have you looked into the JG edelbroke header of the Comptech?