guys, just wanna ask.. piggyback di kisaran 5 juta rupiah u/ RB engines yg uda complete sama tuning n installation ada merek apa aja ya? preferrably ones which'll boost quite a lot of horses under the hood. :) lebih2 dikit gpp, asal jgn sampe 10 jutaan.. maunya sih yg bisa di tune sendiri n user friendly, jd ga harus bawa ke bengkel klo mau rubah2 settingan. thx for the replies :D