Member, P500 Sport, DSC off (>900)
Join Date: Aug 2010
Location: Lawng Island
Thanked 190 Times in 104 Posts
Best bang for buck, depends on if you need new MAF sensors anyway (get a mafless tune from either evolve or powerchip if they are still DBA...).
Really you've just asked the question "What chip do you have?" so be prepared for biased responses.
Personally, I'd ask you - what is it you're looking to gain? More power? Fix the AA/carbon issue? What? If it's power on a budget you're looking for, I'd first make sure your car is 100% sorted before anything. That means, are all of your sensors up to date? 4x O2 sensors, 4x CPS's, 2x MAF sensors. Does your car show the correct K_TEMP and OEL_TEMP in the secret menus? etc, etc. How's your clutch holding up? Does it show any signs of slipping?
Assuming all this is in good order, I'd go with muffler delete (drops weight, frees up power, sounds fkn awesome) and a set of K&N panel/drop in filters. Maybe install a set of test pipes / cat deletes (might throw a code without post-cat O2 sensor mods). That kinda stuff. Chip should be last, I think.