That's fine as long as you don't want to get into big shots of nitrous. The selinoids are just not big enough. For the money I spent on a zex kit I could have spent a little more and gone with a NX kit.I never had a problem with zex. I just did the math and figured out what jets I needed to make the rating at the wheels like the other companies do.
Zex's shots are fine, you just can't go by their chart because they rate at the flywheel when calculating power.