Modifying a tune-able car mostly crashes. If you're looking for a tune-able sultan, make sure the mod which you are gona install has all the tunning parts or not.
Ex-Army Member, Ex-Swat Warrant Officer 1, Ex-Pagati Member
If you need any kind of help with modifications or related issues with the Game, PM me Currently inactive in-game due to Study schedule, if you need me, you should PM me on forums.