All this seems really unfair to the OP, regardless of the posters history, in my opinion.
OK, so perhaps he should not have implied any fault of K-Tec at the outset (he has admitted this now as far as I can tell), but all he has asked is if this is the gain he should be expecting and, in a round-about way, ask if their might be a reason why/if his power is down. I can see why he would ask this from a forum.
I would not have modded a car that was nearly due a cambelt change, but 4-5 years interval is about right so it's pretty unreasonable of those who slate him for not getting it done sooner. Every 3 years someone said!!! really??? Aux belt, yes, and I can see the logic in doing them the same time, but it's hardly being a r****d for NOT doing it per the manufacturer specs.
so give him a break, guys. And K-Tec need to make their marketting more honest, In my opinion.
I like the knowledge (from certain folk) on this forum, please keep it constructive.