that is an excellent compilation of info on exhaust systems, nicely done!
unless you go for a full sports exhaust which would be less restrictive and tune the ECU to go with it you wont really get significant power. it's really not worth the money as is the case with a lot of other power gain increases in the Boxster. but heck man.. you have the S and you still want more power? i'm running around with the 2.7L and i feel the car has adequate power and the BEST part is i can actually plant my foot down and keep it there while i go through the gears and not kill myself or go to jail every time i do so.
a lot of people here will tell you the same thing: go for power increase upgrades when you've become such a good driver that you've outgrown the car in it's stock form. people have been working on that for years and it's not an easy thing to achieve.
i really do recommend a new exhaust system for some glorious sound though!
it will completely change the cars personality and you'll love it. i went through a few options before i found the sweet spot for myself personally.
i currently have the top speed cat delete pipes (normally 199$ but you can get them for 150$ like i did, i think because i mentioned the 986 forum but cant remember) and the Fister exhaust which will run you around 480$ + shipping. you get a few extra ponies with this setup but not really noticeable. and the best part.. ZERO drone!
here's the end result on a 2000 base:
https://www.youtube.com/watch?v=w1Efeluufu8
the first thing i did when getting my boxster was asking "how can i get more power" but then i quickly realized it doesnt need it.
do it justice and drive the crap out of it! the way it was meant to be driven!
