keep reading about a lot of people on the BMW websites going crazy for "Alpha-N" chips which do away with the MAF and run purely from throttle angle. aparently this gives them loads more power as they dont have the (aparently) restrictive MAF in the way.

as far as i can tell this is done by editing the LOS map to contain the map you're interested in, so that with the MAF disconnected, the ECU enters LOS, and reads this now edited MAp and the car drives as intended.

in theory this sounds sensible(ish) but i'm sure it's a stupid thing to do?

also what are the cons of going from a proper MAF based system down to a purely alpha-n system. surely if there was no need for a MAF manufacturers wouldn't be using them? now i'm pretty sure i know the answers to all of these questions, but would be nice to get input from those that do this for a living (ie tony/stu/karl etc.) also would you personally ever sell such a chip, and if not, why not

thanks guys