My 2003 Accent GT:
SRI, Evofusion header, custom exhaust, JRM's phenolic spacer, TB coolant bypass mod, Redline MT-90, Royal Purple 10w30
The blue lines are my previous runs in October. HP held the same but torque dropped 8 lb/ft. It was a low day though so I think in reality I'm making considerably more power than before.
My wife's 2005 Tiburon SE V6:
Fujita CAI, Royal Purple 10w30
They didn't have a copy of the previous run in their system for the Tib but the previous numbers were 161hp 169lb/ft. This run dropped 13hp despite adding the Fujita CAI. I don't think power output has gone down, I think it was mostly the day we ran.