Custom air intake? 91 plymouth acclaim

I doubt if you will realize much of a difference but no further modification is necessary, the sensors that monitor air flow are after the filter so the cars computer will make its fuel trim adjustments as before.

Good Luck!

Move the air filter (air inlet point) outside of the engine compartment, preferably to a cool area inside fender and forward of the front wheel, just below the battery, also protect it from water splash, to be safe. This will allow cooler air charge and will allow more advance and power when other mods are added, also will make the engine less likely to detonate (ping).

http://www.knizefamily.net/minimopar/

http://www.allpar.com/