Does this sound right?
07 450r white bros aluminum full exhaust, k&n open filter, and jetted to match
made
40.2 rwhp
30.3 rwtq
does that seem low ?

There are a lot of factors between dyno's that give varying results. Dyno's are really only effective at showing number changes from one change to the next on the same dyno.

But those numbers sound about right to me.

I agree, and the numbers look about right to me too.

I hate to be "that" guy but.............. were you running dyno tires or knobbies? We all know that deal here. I think it seems a touch low (as long as it is actually tuned properly) but the tires/dyno may be why.

Stock bikes pull 37-38hp on the VENOM dyno and if I recall that one reads a bit low.

I think there is more there dude!! If only a couple HP.

That stock cam is garbage, i'm sure you know that. Get a HC 1 or 2, CRF, or HRC bump stick and see how she does.

Eric

Sounds about right for what he has. I would say thats great for whats on it.

-Kip

sounds exact to me