Are these mods suggested? I have the 2.0 15% pulley by ALTA. Are the crank pulley, ALTA-nator pulley, and S/C pulley belt suggested?

 

you'll get lots of opinions about the crank pulley and wether or not that's suggested, look around and form your own opinion. i think the alta-nator is good for peace of mind knowing that your alternator is spinning at close to stock speed inspite of other pulley swaps

 

Well, you don't need the alternator pulley unless you also get the crank pulley - simply changing the supercharger pulley won't affect the alternator speed.

I've installed several 15% pulleys on low-mileage cars and kept the stock belt, but if you've got some miles on your car or suspect the belt is slipping, it wouldn't hurt to replace it with something a little shorter.

 

Well I've only got 19k on my '03, so not really high on the miles.

How does it feel when it starts to slip? Cause if I'm at a low RPM, and I give it a little more gas than usual driving (say, to pass someone), and take it above 3200rpm, it seems to not catch until about a second later. As in, the RPMs will jump, but the speed will not jump in complete normal unison.

edit: However, if I start off at a higher RPM, it does not happen. Especially in first gear. My "perfect launch RPM" from 0mph is around 2900rpm. I'll lose no traction, nor will I lose torque. And the "not catching" (as mentioned above) does not happen either. Just happens when I go from a low rpm to a higher rpm.

 

Mikes may not be high but time is. Belt will stretch over time, sounds like a good candidate to replace.