Reviewed By William C (Highland Park, IL) Reviewed for a 2009 Chevy HHR —11/23/2012 8:29 AM
Can't notice any performance change, but gas mileage went from 29MPG to 31MPG. Good deal! I am looking for the same type of system for a 1991 Maseratti-Chrysler TC(3.0 mitsubishi engine) and a 1985 Corvette. I was told H&N does't list one, but does anyone else?..these were very common engines.