Absolutely. These type of motors can be very challenging. Especially if it is an automatic car. Most customers want a car that will idle on it's own without stalling. They don't want it to stall when they put it in gear. They don't want it to fall on it's face, hesitate or back fire as they accelerate from a stop. They don't want it to foul the plugs or make your eyes water from the exhaust. They don't want it to die every time they stop at a stop sign or run on when you shut off the engine. Etc.
