First impressions on packaging: This was superb, I have shipped thing that can break easily and they weren't packaged this well.
Installation: Very easy.. I watched a mechanic do it in under 30 minutes. ( only charged $20 )
First time reving: Differences I noticed right away were, it does rev faster and revs drop faster. I'm not talking F1 fast but definatley faster than stock, and noticable.
First Drive: Under load the revs are faster during acceleration, the car to me felt faster and lighter on its feet, what I mean by this is, you hit the gas you go, no waiting for revs to build up at low speeds or even in a higher gear; ie: 5th going 30mph you just pull.
Another big difference that caught me off guard was engine braking. I would downshift and engine brake all the time, with this pulley it doesn't slow you as much. I like it!
I waited awhile to write this so I could use it in the 90 degree heat as well as frigid 40 degree days. I have heard people say your heater/ ac are effected by the pulley.
I have noticed no difference with either, both still work fine. One thing I did notice with the a/c, when I would have it blasting with stock pulley, the car felt bogged down at times. that has pretty much been eliminated.
The pulley itself, you can tell it is 100% professionally made, superb part.
Overall, I'm glad i bought this and would reccomend that anyone who doesn't have one, get one.
Now where is my Rear Sway Joe and Justin!