I have had my Grand Marquis for about 2 years now and it has been a great car, since I put a new intake on it after the faulty design Ford came up with and put all new coil packs in it. I really need to know what kind of Oxygen Sensors are in the exhaust system. I have reason to believe that they are either (Wide-Band) or Digital Narrow-Band sensors. I really need to know for my new HHO cell I have installed and that im trying to perfect. The EFIE chips are $100 each, so I dont want to get it wrong, so can anyone help me out?
Thanks!

 

I believe the sensors are all Narrow-Band Sensors.

 

ugh... chips only do one thing for these big cars... i will say it over and over... it fools the ECM to thinking it is cooler engine making it use more fuel and stuff... best advice is swap rear gears for better ones and do exhaust upgrades! flipping to dual exhaust adds 10 - 20 HP, since readings for the cars from factory show this too... gearing in the rear of the car will enhance the takeoff from a stop and stuff to get moving faster since these cars are mostly geared toward highway use instead of better take off... the 3.27 or 3.55 gears will improve this and help mileage if you do mostly city driving instead of fighting the car to move using more gas if it has 2.73 type gearing... reason i like my older Panthers is the mods for the car are WAY cheaper than the 4.6L mods