Are pulleys worth it?

[GAU-8]

Hey guys, I've read a couple threads on here about changing pulleys but haven't found one that shows whether or not they truly are worth it. I've had a car or two that made a world of difference changing pulleys and a car or two that actually hindered performance by changing pulleys. I've seen pulley kits available that changes the majority of them out claiming horsepower increases. Are they for real on this platform? I don't want to blow the cash to find out there is no real benefit doing this.

Thoughts and concrete evidence welcome!

[suby01]

http://forums.g35club.org/zerothread?id=389529

http://forums.g35club.org/zerothread?id=433767

to answer your question in another way you get about 1-2whp from them it does make your car a lot faster. was it worth the $14,000 repair? no.