What you need (same as TSX 04-06 owners), two items:

*Acura TSX ECU 07-08 AT or MT, depends what gearbox you have (possible to get used for 150 USD if you search hard)
*Hondata FlashPro unit for Acura TSX 04-06 (Marcus from Heeltoeauto.com can offer you)
Also Honda dealer required to pair you immo to new ECU (For CL9 euro 2006-2008 users OEM immo module works, didn't had a chance to test 2003-2005 but I believe that it will work also)


^Info from

http://www.ozhonda.com/forum/showthr...8-ECU-required


Judging by that you need a TSX ecu to even try to tune it.