thanks for your reply, in fact my elder brother tunned it from his friend Mechanic six months before, and he told that no need to tune till one year, but i think, its necessaray to tune it, also due to back fire its air cleaner assembly was damaged, i changed its coil, back fire was stopped and i repaired its air cleaner assembly too, but the problems is still exist, like missing on petrol and when i use A/C, almost on every chowk or turn when i slow car, the engine stopped, and some time when i try to start its dont pick the race, so worry about it, please suggest and also reffer to any best mechanic,,,thanks & regards
