Hello,
This is my first post here on ecomodder. I have a 1998 Jeep Wrangler with a 4.0L I6, AX-15 transmission, NP231J tranfer case, and MANY aerodynamically damaging modifications that the typical four wheeling enthusiast would install. My goal is to get the best mileage possible without removing these modifications.
As of this writing the Jeep has a wobbling harmonic balancer, a vibration in the driveline, a dying catalitic converter, overly aggresive offroad tires, and improper gearing. These problem I will address and record any improvement in MPG.
My questions to the ecomodder community are:
1) Is the cost of a computer programmer worth any fuel gains that I MIGHT get?
2) What kind of tires should I get? I am looking at the Falken Wildpeak A/T beacause of its claimed offroad abilities and its more circumfranacially comlete tread pattern.
3) What kind of muffler should I install? I have a brand new Magnaflow high flow catalytic converter ready to install. There are many mufflers out there that improve the sound (which I wouldn't mind) and claim to increase horsepower and torque (I could give hoot about horsepower, but I love me some torque!
). What would these do to gas mileage? What about a glasspack?
4) How would the MPG's react to intake and air filter modifications?
5) What is this I hear about timing advancement and, if I did it, how would it affect the engines torque output?
Opinions on these five questions from several members would help me IMMENSELY! Please mention anything else that would help.
-Jesse-