average

Hey im from Australia nd own a 2014 xj6 with full two brothers system and power commander 5 Ive updated firmware and tried a few of the marthys tunes and all I do is highway riding. Sitting on 100kmh and all im getting to a tank is average 155kms a tank. (90miles heresay) I run 98octane...

So out of curiosity, is anyone else else having problems with fuel Guage being way off? Mine was fairly accurate until my last 2 fill ups. Filled up Friday after commuting all week and left it parked until today. I was at 6 bars and when I went to start it went to 5 and after less than 20 miles...