I have an 06 JCW and after reading about the flap removal mod for the JCW air box and the fact that I knew it had a craptastic paper filter I decided to change it up. I removed the flap and the vacume resivor in the air box and replaced the filter with the K&N RU-3130 universal filter. Then I added my OBX headder that came in, so while I was doing that might as well eliminat the resinator. I when across the street from work to autozone and got a piece of 2 1/2 exaust flaired at each end to take the place of the resinator and to clamps to hold it in placxe until I could get it welded. Not being able to leave well enough alone I when I took the car to get the exaust welded I had them remove the flat spot in front of the mufflers.

In short for about 300.00 I have a JCW that still looks jcw but better, better air box, better exaust. I can;t believe the diffrence these mods made, not just in power but in the sound and fun to drive factor. I'm still not use to the car having the extra power. .I have to try to control my self so I don't just floor it every where.

The base line dyno run was 170whp
I'll dyno it in about 2 weeks to see the actually diffrence. I love this car even more now. I need more mods. here I come cam and better head.

 

So what cat did you use for the OBX and where did you get it? I am sure most of the gain that you are feeling has to be from the OBX header. I dont think the other would be too signicant....

I cant wait to get an OBX, also a JCW. I would like to see about getting mine ceramic coated with a decent high flow cat already imounted up.

Good going on the new mods... cheap and high on the fun to drive as long as you can get away with it factor!

 

I'm using the factory cat on the car now. I wasn't totally sure about the aftermarket cat, but I'll proball change it one day. You deffintally can feel the heat comming of the header but I never really try to check the heat comming from the old headder. I'm going to install the factory heat shield over the headder and I might install some of the thermal matt over it's silver and would keep the factory look and high temps down. I'm sure most of the power gains came from the headder but my friend notice when I was backing the car up that he could now hear the intake sucking in air. Better flow all the way thru.

 

hey, urban
did u install the headder? or have a shop do it?
I just got one.. ths shop wants $400 to install it?
TIA