What to do to tune up or turbo charge ?
 

I got a 2005 rx8 A/T ( Type E ) .

I want to tune up . what i can do ?

Basic answers are included in the first 8 posts of this thread.
https://www.rx8club.com/new-member-forum-197/new-potential-owners-start-here-202454/

When you are done that, go find the Major Horsepower Upgrades subforum (instead of the RX-8 Discussion subforum) and start reading those stickies.