well i havta admit. having this combo on my xr def inproved fuel economy but you always get that nice lil note which for me is at 2000. that gets ya goin and you can see the fuel gauge go down as the boot hits the floor

the extractors and exhaust is a good idea and if u got the money upgrade the intake side as well

I adjust my fuel consumption by my right foot.If i need power i press down further or if i want to conserve fuel and cruise i will lightly prees the accelerater pedel..ha