A acascianelli Messages 856 Chesterfield, MI Dec 9, 2013 #1 Do we still need to put 200 miles on a car to break it in for max horsepower? And had anyone figured out if horsepower begins decreasing after a certain number of miles?
Do we still need to put 200 miles on a car to break it in for max horsepower? And had anyone figured out if horsepower begins decreasing after a certain number of miles?
