installed it yesterday.. ended up using the factory donut gasket for now.. didnt fit tight on the js header but only thing available untill i get get the right one sent to me. seems quieter at idle compared to the stock header/cat with HKS Hi-Power. but at WOT it screams... Could definately tell a different in mid range power as well.. Overall im happy with it.. Tuesday i will be putting the T1R 70R Exhaust on..

i took some pics and sound clip that i will post later tonight.

 

it was right around 1600 shipped.. i didnt weigh the stock header but id say its 15+ lbs difference

 

 

Here is a video of the car at idle and reving it up some.
[media]http://westkyimports.com/js/idle.wmv[/media]

 

I have this header also and it works sweet mid-high range. Was considering toda but did not want power down low cause
i have sweet 4.56 gearing. J's all the way baby

 

Took the hks exhaust off today and installed the t1r 70r.