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You may be correct. I get left and right mixed up as well! :out:

lol yeah maybe during the break in period of the new engine I'll be able to take it easy and see some good mpg figures. Prob not since the engine will be so tight at first.

Ahhh ok. Well I guess I've never just upped my tires by so little. Having the speedo read wrong drives me nuts. Yeah 2 mph isn't too bad. I just like knowing my real speed when I see a cop. ...

I'm not sure if the same thing will work on a pre 97 XJ, but I was able to correct my speedometer and odometer with a $30 gear that goes in the transfer case. Might be nice not only for accurate mpg...

It would. :D

Who said track? Are you talking to me? If so UserCP > Edit Your Details :link:

As you guys calculate your mpg please remember you can record it in the UserCP area.

Is that 16 mpg city or highway (mix?)

So that means your mileage is going to be higher, which means your mpg will be less. Assuming you are using the odometer to calculate your mpg.

Wow and at 240k miles too. So I don't know metric tire sizes, are the tires you are running a larger diameter than stock? If so how are you compensating for you mpg calculations?

Obviously this is due to the millionaires not paying their fair share! :smiley-whacky119:

I don't know, and no, I have no other device that gives me this information :(

My wife was hearing a funny noise from the 99 so I drove it to work today. Man that thing is smooth as silk. Anyway I hooked up the OBD II scanner and monitored the same things as I have been...

Okay I have another riddle.

Recently I've been monitoring my OBD II scanning software while driving to and from work. The software shows instant mpg and average mpg. I routinely get between 16...

I wish I had calculated my mpg before lifting. I have no idea what I was getting prior. :(

It may be possible, but I believe I read of some issues with the float. Getting it in correctly, bending it, or something. I'll have to do some re-research to confirm it. It's just my gut feeling...

I do not think this will cause a change in my mpg, but I have found an issue with a major portion of the fuel system. Namely the fuel pressure regulator/filter.

After testing the fuel pressure...

I wish we could get ANY non-ethanol.

lol wow what a trip! Kind of makes you wonder why anyone buys a new vehicle!

Bragging is fine especially when it shows a positive goal.

I don't think it would be worth me spending $200 (or more for a rare 4.10) rear axle. I'd be better off just buying a set of 35" tires.

Shipping weights for 4 tires are as follows....

BFG MT...

It's a hard decision. It's very expensive and you don't want to look back and say I should have done ...

I remember one of the discussions was the high RPMs that the 4.0L would be turning. I...

If you didn't read from the beginning, I was getting 10 mpg with 32's and 3.55 gears. My mpg increased going to 4.56 gears, by nearly 2.5 mpg.

Yeah that's buried in there on one of the posts. I corrected the ratio each time with a new speedo gear in the transfer case.

I think I calculated that a 4.20 gear would have been best for my future 33" tires.

Basically the fine folks on NAXJA said go one lower, you'll wish you had otherwise.

4.10 was the original...

I'm going to start an experiment Sunday evening that will run Monday through Friday next week.

I've noticed during past repairs that needed to have the ECM reset my gas mileage is better (I go...