I got an 04 lancer ralliart with some bolt ons and looking into getting a cam and whatever else i would need to support it. I want the cam to change my idle to make it sound meaner, but i don't know what stage or what not to get from RPW. Also i need to know what computer type work or piggyback that would need to be done in order to accomplish this task. Any help on this matter would be great.
thanks

 

How much searching have you done? This has been discussed more than once.