16l per 100 jk unlimited rubicon

[wranglertj]

Drive it differently

[reddragon]

go 40 psi in the tires, turn off the air con, don't floor it away from the lights and learn to coast with traffic. make sure your front wind deflector/undertray is on for better hwy efficiency.

[Wrangel]

Originally Posted by wranglertj

Drive it differently

Trust me most of the time we baby it around.

[Wrangel]

Wind deflector is on, I'll put the tires up this afternoon, I don't really floor it at all unless trying to get going when entering traffic which does not happen that often. I'll try the tires and reset and see how I go.

[Banshee]

I have a V6 man with 3.21 diffs, DBOR front bar, no deflector, 2" OME lift, AEV snorkel with Topspin prefilter and 285/70R17 Bighorn mud tyres.

Freeway at 100kph in 5th or 6th I get ~11-12L/100, doing the school runs, ~16. Lots of hill starts & corners... The biggest increase I saw in fuel consumption was putting on the 285s from the OEM 255/75R17s. ~3/4 inch bigger, but I believe the chunky tread increased the rolling resistance significantly. before they went on I could get down to 10-11 on the freeway at 100. Usually in 5th, the 3.21s are too high a ratio to maintain speed up the rolling hills on the M4 between the Mountains & Parramatta without using excessive throttle in 6th! And go up to 110 and the usage goes up to ~13-14L/100 over the same stretch of road.

[Wrangel]

Are there any aftermarket ecu type upgrades that might offer better economy? That are tried and work?

[Banshee]

The Superchips Flashpaq has settings for several fuel grades & Economy. Most who have installed them seem to say they helped, a few had issues. Most seem to report marginal improvements in fuel economy, (unless they make use of the slight extra power! )

They have a forum there you can check for users comments & help requests to get an idea.

edit: Just keep in mind that in the US they use pump octane to rate things. This is (motor octane number + research octane number)/2, so is ~3 or 4 below what we have (RON) for the same fuel. ie their 87 is our 91.