I can tell you from my own experience that I wish I would've done that . don't get me wrong the 325 is great and fun to drive , but the 330 has 45 more HP . I've been looking into performance mods for my 325 , 184 HP , and have found that with the cold air intake , exhaust , and downloads for the ECU I can barely reach 200hp. The 330 has 225 HP right out of the box . I wish I had a 330 . sounds stupid to me to spend thousands of dollars on mods for my 325 when I'll still come up 25 HP short of a stock 330 .
So if you 're a perf. enthusiast or like to just "zip" around alot go for the 330 . and why didn't I buy a 330 [???1] the selection here in hawaii isn't the greatest and I found a 325 Ci with all the options and the color I wanted