Fact is, a catalytic is here to stay, and more and more lawmakers are pushing laws, in every state, for them to be installed.
Now it's mostly cities, but I think pretty soon it'll be a global thing, to, by law, have one installed.
I take the advice,
The HP gain per $$$ cost ratio, on going catless, is too low for street driving.
There are more efficient solutions.
I've read about people suggesting thicker head gaskets, when boosting the PSI, and still able to run on 87 octane (running a lower compression ratio this way).
An alternative to running thicker head gaskets, to get higher boost on the tracks.
With the goal to continue being able to run 87 octane, instead of boosting beyond max PSI what they do on the tracks.
Not sure how viable this mod is; since a headgasket replacement is quite expensive, unless one knows what he's doing, and can do it himself.