can a one chip fits all ( on injector rating ) be as good as a live map ????

i have been looking into this conversion, my car has been live mapped on greys and runs sweet as. thing is, its on greys so as most of you will know you have to plan your trip via fuel stations lol !!!

i also have anti lag, wasted spark ect ect

got told by stu on here that he can do it, but when i phoned to order one ( after lots of should i / shouldn't`t i ) got told by the bloke on the phone that it cant be used on cars with ALS !!!