Ideally, you should dyno both stock and after mods on the same machine, with the same operator, with hopefully the same conditions and not too much time between the dyno runs so it's calibration doesn't drift. But the ideal just won't happen. That's why I also don't discount stats like 0 - 60, 1/4 mile runs and such. And even the good ole butt dyno. All are subject to error. And I feel all have worth.
With that said then to the OP: does it feel any different?
I've been assimilated. 6MT/ZPP/18"/PS extended.