Sorry guys, i read all ur post no one post about engine YRV mod exhaust...rite now im using Kelisa stock exhaust auto...but its ok...i try qoogle so many time but the info is to small.....if anyone here use YRV engine can you share with me or pm me..i really wanna mod it but still scare if result is not wat i expect...im very worry because YRV engine is auto turbo engine if mistake my car will lose power and termenung when try tarik pick up...hehee so if anyone have info please share with me...even better if u have pics for easy explain...thanx all....