I recently purchased a 2006 Commander, 3.7L. Got a great deal on the truck and just couldn't say no. I LOVE this truck- Black, 26K mi, Loaded, Leather, Clean engine, clean interior/exterior, all clean... except the exhaust pipe. I noticed when I stick my finger in the tip and wipe that it is black and sooty... Like the emissions module isnt working correctly... or O2 sensor (or both I dont know).
It doesn't smoke or smell funny at all.
I do know that my Harley used to be the same way, until I put a Terry Systems "Terminal Velocity 3" on it, which manages the fuel system (fuel injected) and emissions by taking a reading off of the exhaust bung.
Now the inside of my pipe is clean, I get more horsepower, and better gas mileage. The bike now runs mint.
I would like the same for my new Jeep.
My question is.... Is the 3.7L just that inefficient, or do I have a bad sensor? I know the dealer went through it before selling it to me with their "100 point inspection" , So my assumption is that this thing is running in tip top shape
My MPG is terrible at around 14 city, 17HWY. I did read some of the other threads on mileage and would consider the CAI and Exhaust, but it just seems to me like the engine could run more efficiently...
Are there any computer add-ons available?