IMO, they're worth it. I bought hoping they would add a little HP on the topend of the powerband (which helps a ton if you raise your revlimiter).
No dyno result but I do have some track results:
I gained a little more than 1mph in the 1/4 mile after adding 2-piece front rotors and post MAF tubes. This was in similar temperatures/DA on the same track, several runs for each night.
Which mod made the most difference? who knows.
