they have different bored out throttle bodies, has any one got some of the racing bored out or close to racing throttle bodies? cause i want a new one but i want more then 4mm bore. any help will be great thanks. and yes i serch but nothing showed, maybe i serched for the wrong thing? if so clue me in...

 

Unless you have a good amount of engine mods 4mm bore will be more than enough..