What kind of motor is it and what type of car is it in now??? Are you going to run this engine in you new sedan when you pick one out, or are you going to get a new engine too? Be sure not to run your engine too lean, or it will be shot bro, and this time I'm not jokng. Make sure when you rev it up it has plenty of blue smoke coming out of the exhaust. The blue smoke is the oil going through the engine. The more smoke, the more oil and the cooler your engine will run. But you don't want TOO much smoke, that means your engine is running rich and you will loose perfomance, but this will not hurt the motor. If you have little or no smoke, then you rist burning up your motor. Keep an eye on it. It's most evident when you give it gas out of a corner. Good luck man!!