What year is my Dyno "air" anodized red 3mag wheel?
This is a 1999 Dyno Air from bmxmuseum.com
The problem with this picture is the bent seat post.
Researching on bmxmuseum.com Dyno does not start using a straight seat post until 2001
The problem with this picture is the rear wheel drop out is very different than the 1998. The rear drop out from 1999 is a match for your bike (as near as I can tell from the fuzzy picture in the original post).
In 1998 Dyno located the rear brake on the seat stays, not on the chain stays behind the crank. The brake was moved in 1999.
So, the frame is a 1999 Dyno with a swapped out straight seat post