Trips gives a good description of the difference in this thread. I know Z1 offers the G3's with powder coating options so you can customize them to the color you'd want.

https://www.z1motorsports.com/air-in...it-p-3847.html

Has anyone ordered off Z1 (powdercoated) and gotten the CARB stickers with their order?

I read that the Injen may sound a little 'nicer' (obviously subjective) than the gen 3's.

Injen is louder and ore aggressive than the G3 by a pretty big margin. I swapped between the two a few times and ended up running the Injen and selling the Stillen - which sounded like a kitty cat by comparison. I was running motordyne exhaust with art pipes.

No idea on carb stickers. Just shoot them an email I guess?

Carb sticker comes with the stillen. I stuck it on an old Express VIP card. It's not stuck on the intake itself ;)

Problems with stillen G3 taking on water
 

Has anyone experienced problems with water through the intake in the rain or wet conditions with the stillen G3 and was told to avoid them. The problem being that I still really like them and am wondering if this is true or not.

Thanks