Sep 30, 2013 at 8:24 AM
Honda CLF & Dave McDonald, I am very much listening and appreciate all of your advice so it seems to me that a PCM swap would be more of a pain than it's worth. So far what I have done to my civilian 2005 Mercury Marquis is convert from single to dual exhaust with four new catalytic convertors, installed a P71 air box, and upgraded to a 200 AMP alternator. After the mods I have noticed an increase in performance with smoother acceleration. Remember my MGM has 2:73 ratio so I cannot expect a major increase in seat-of-the-pants acceleration. So at this point should I leave well alone with the mods I have done or not? Thanks gentleman......det45