The life of my engine and transmission be negatively affected by the BPU ™ mods?
Yes, but not by a significant amount. If the car is properly maintained, and the car is treated with some respect for the components, you must retain much of the life process of Power. Which takes into account that the Supra is by far one of sports cars more reliable and durable, it lasts longer than most sports STOCK well maintainedcars. The only Drivetrain components that will see life will be shortened significantly the stock clutch. It will most likely not last much longer than 8-10k miles once at BPU ™. This is particularly true if the car is making repeated high speed runs using 5th and 6th gear at full throttle. If your stock clutch has high mileage on it, or has already begun to slip, you’ll need to plan a new breed of high performance.