your experience differs from most, there's always worser case scenarios, but 9 times out of 10 cams get you to 200+bhp with a remap. Forget inlet work, headwork etc etc, you dont need to do all that to get to that figure.
cams, exhaust, remap, decat.
RR's are not always 100% accurate, but come on, you're making out like they can over or under read by 100bhp, they are usually a few bhp out at most... obviously you get bad RR ops, but most people on here who have these 200+bhp packages have had their cars RR'd at several different RR places.
Or we could just buy a cheap car that has had the work done... Then justify the cost to all members having spent the money/hassle modding it?