[NightOfTheCow]

I know this is a little late in posting... but this is a subject I've done a LOT of research on.

...and I have a very simple answer to why you don't hear much about the negatives of UD pulleys.

So many people swear by them, just like people swear by K&N, etc... but how often do you hear anything negative about them? And for the negative side effects, why don't you hear much about the negatives?

Because people spend a lot of money on such small mods, they don't want to openly admit they made a bad choice. Case in point: My K&N SUCKS. Literally and figuratively. It's not the best aftermarket CAI you can buy. I immediately started experiencing issues with stalling after installing it. Some other forum members here have talked about it. But I'm certain there are a larger number of people out there that refuse to say anything bad about it. They'll swear by it, knowing full well they've purchased garbage, just as I have.

As for the positives mentioned... ironically, the only things I see are an occasional honest opinion about how much of a gain someone got out of the install. And of course the unGodly amount of blasphemous overexaggerations of gains that only a supercharger install could rival.

Even with other bolt-ons, I'm sorry, but the gains aren't going to be multiplied. An intake spacer gaining you 4 HP isn't going to multiply your 3 HP gain from UD pulleys to 12 HP. You might get 7, and woohoo.

People are entirely too stubborn to admit that some things simply aren't worth it. Since they've spent money on it, they try to convince other people to spend money on it. If someone duped you into spending $300 on a bag of garbage, I'm sure you'd feel better about yourself if someone else did the same thing. I know I'd be thinking, "Thank God I'm not the only one in the world who made a bad choice."

Bottom line... a lot of the people on this forum have been at this with these particular cars since they first started shipping 'em out over 5 years ago. If they advise against doing something to it, I'm pretty sure their level of experiences with these matters is worth taking into serious consideration over false "scientific" statistics (due to consumer misinformation based on shame).