haven't had my BA xr6t for long it's a mk1 4spd Auto tuned by C&V only mods being intercooler , flash tuner , valve springs , actuater . Too me the car seems to be very very heavy on fuel I've been going easy on it to see how far I can go on a tank . According to the trip computer it's up around 17.4-17.6 L/100km's On this current tank of fuel I've only done 290km's and she's neally ready for another tank the trip comp indicated 40km's till empty . My question being does this seem very excessive or is that about what is expected ?. I don't do any highway it's all stop start short trips usually I know this doesn't help the situation but I expected to go further then on a tank then what I am . The car makes 309rwkw on C&V's dyno