it doesnt matter ur car is on cng, petrol, diesel. exhaust sey pehley silencer key pipe par aik spark plug type kee cheez hotee hai jo key flaming kit sey attach hojatee hai aur us ka button driver key paas lag jata hai us ko jub bhe on karey gey to wo 4 ya 5 rpm key baad fire marey gee. actually jo bhee dholkee aur silencer main kachra hota hai wo burn hokar nikal tha hai. i will fix in my fx that exhaust with flamming kit.