Thanks for info ... will check out next time homeK&N now makes the air filter for the Promaster 3.6 engine. My fuel inconomy increased by 3.5 mpg and the throttle response is smoother.
I bet if you remove the air filter all together your fuel economy will increase even more. K&n improves air flow at the expense of filtration efficiency. Do your engine a favor and use the OEM air filter.K&N now makes the air filter for the Promaster 3.6 engine. My fuel inconomy increased by 3.5 mpg and the throttle response is smoother.