I nstalled the Blitz short-ram intake and JIC Majic exhaust today. When I started the bad boy up I noticed a knock of some sort when sitting inside and only at idle. I checked to see if I could hear anything when I popped the hood and found nothing. I decided to check over my install and found no loose items or discrepencies for the cause. WTF anybody>?

Could this be from the O2 sensors or some kind of vaccum thing?

Besides the obvious, this Blitz intake and JIC exhaust has provided me with a nice noticable increase in tork and definate improvement of sound. I likes! :D

If you have the strut brace, check to see if the Blitz is hittint it......
Otherwise I'd say it's the Jic hitting something

a clicking sound?? didn't notice that... I noticed a hiss sound when I stomped on the gas, and then the different acceleration noise at WOT, but other than that definitely no clicking in my experience.

I second ScionRacerxB's suggestions... maybe have someone check the exhaust when you stop on the gas on a rack?