Quote Originally Posted by mudnut View Post
Anywhere from just under 14 Highway to around 18-19, offroad driving.

Maybe the fuel return solenoid is stuck open, making the fuel pressure too low, so you need to put the boot in it to get power. A dynotune might be the best guide to show whats up.
Thanks mudnut, hadn't thought of the fuel pump or solenoid, the throttle response and power aren't a worry, it holds highway speed and accelerates pretty well for such a heavy vehicle. Regards the fuel pump, it's electric and in tank isn't it?

Maybe I'm tired but how would the pump slowly failing cause poor economy? Not doubting, just curious, and how would I test the pump?

I may have to find a dyno tuner in Perth that can work on Carbied motors, anyone know a good one?