Crafting Wondrous Items... specifically ability enhancing ones...

[Asheiridon]

I'm currently playing in a game as a level 8 wizard. I don't own the PF book unfortunatly, the group just shared a couple. Anyways...

I have the Craft Wondrous Item feat and I wish to create a Headband of Vast Intelligence +6. I meet the requisites and have the items... my question is does the required CL (8) go up as the bonus on the item increases?

For example a +2 needs CL 8 while a +4 needs CL 12 and +6 needs CL 16?

Thanks for any help you guys can provide!