hi all, im looking for a little advise, i own a b7 rs4 06 plate with 65000 miles on it, its totally standard (engine wise) 420bhp, what benefits would i get out of remapping it? ie, extra bhp? fuel consumption etc, or would i be aswell getting it chipped, not keen on spending a small fortune if im not gaining much,so thats why im asking you guys for your help, i look forward to hearing from you all thanks.