Best Bang for the Buck Performance Upgrades?

[nimrodinvestments]

I am picking up my new CTS tomorrow, fully optioned (except for 4 wheel drive), and would like to set some priorities for future performance upgrades. My limitations are the following:

1) I do not want to void the warranty,

2) I do not want to install items myself (so, factor in installation costs with your recommendations),

3) I am probably slightly more interested in horsepower and/or torque improvement than handling upgrades, but am open to suggestions...

Thanks in advance!!!

[badblkcts]

as far as i know, there isn't too much on the market for the 08 cts yet. i know d3 is working on some stuff like intake and exhaust. i would say if you wanted performance, go with a caddy v series. as far as i am concerned, the 08 cts is fairly quick for being stock and a luxury sedan. i had my fun with with 400+ hp/tq hemi truck. now its time to kick back, relax and enjoy the new caddy.