ECU: HKS Fcon Pro
Exhuast: many to choose from
Fujitsubo has 2 - Power Getter and RM01A
5Zigen has 3 that i know of
Buddy Club - Spec 3 and Spec 4
Apexi
HKS Hi-Power
many many more...they are all about as good (performance wise) as eachother..just depends on what exhuast note you like listening to

and....clubrsx.com has all your questions answered..