plus if you get a wideband and adjusting the narrowband enulation does not do the job you can always adjust the MAF screw to lean it out. I did that, and when I finally got access to an openport 2.0 cable to reflash the fuel maps I didnt have to change bugger all of the fuel map because the MAF screw mod had got the AFR's almost bang on. made it drink a bit less gas.
but seriously guys you must have heavy feet. I have a bloody heavy foot I must admit and I still can get ~450 to a tank without having to be too careful.