I was looking at the Injen web-site to learn about their CAIs.

http://www.injen.com/intakes.html

They have 5 different designs to choose from and now I'm confused as to which one to get.

Anyone care to share info on this subject?

Also, any personal experience with an Injen CAI would be appreciated.

I was surprised to read that the TRD CAI is NOT CARB (Calif Air Resources Board) certified and is for off-road use only. What's with that?

I've read the forums extensively on this topic and the Injen seems to be the one most people favor and the Dyno test done by KillertC_com seems to bear out those choices.

https://www.scionlife.com/forums/viewtopic.php?t=92108

Just put a TRD axle back exhaust on the car and this will be my next mod unless I learn something bad about this unit.

 

There's only one Injen CAI for the tC. I believe the one of the 5 series they have for the tC is the RD line.

It's a convertible Short Ram and CAI. But there's not much point in running SR b/c as the dyno you link showed, more "power" from the CAI setup.