Reasons for power??

[AceInHole]

So I'm looking through posts the other day, and some stock numbers for the KA pop up.  Of course, I start thinking, "well, those numbers don't apply to me", but then wonder yet again, why??

Assuming 15% driveline loss, my 142.6rwhp would equal something like 164hp at the crank.... not exactly the 155hp it was rated at.  Does a new intake filter really add 9hp??  Let's assume it doesn't.  We should also assume that I don't get 10% driveline loss, because that would just be a different miracle to explain.

Moving on with the story, I was just getting out of my car after class, and I noticed the manufacturing sticker on the driver's side door area, and noticed my car is really a '94.  More specifically, it was made 4/94.  So, I start wondering, maybe I have S13 cams that were left over from S13 KA production??

Of course, there's always the possibility the previous owner swapped cams for me, which is still cool, but are there any other early S14 owners out there that think their car has just a little extra "go"??