Engines are so complicated that if they hadn't been in production for over a century, it's likely that no one would believe they'd really work. Proper engine performance is dependent on a very precise balance of air/fuel mixture, spark timing and exhaust management; any deviation from any of these parameters will cause malfunction, which is often expressed as "surge" (rapid acceleration/deceleration cycles). you must have to go to a very good auto repair shop for minimise the risk. I suggest you a best auto repair shop i.e. Rose Brothers Garage
. They are really helpful. Rose Brothers Garage also offers a wide range of auto repair services including Oil, Filter & Lube, A/C Service and Repairs, Brake System Repairs,2 and 4 Wheel alignments, Tire Sales & Service, Heating & Cooling, Electrical System and computer repair, Transmission Repair & Replacement, Steering & Suspension.