I have a 2009 JCW.
Are these worth the upgrade for power or are stock tubes fine as is?
thanks

Judge for yourself:
http://altaperformance.com/c-884730-...ir-intake.html

Most people couple intake upgrades with software remapping. I also added a big-*** intercooler (FMIC), and the results from all of the above were in-you-face noticeable. About 1.5 seconds faster on a ~60sec autoX course vs. the usual competition.

YMMV,
a

Who did you use for software remapping