Why are motorcycle ECU's invariably Alpha N setups. My Wolf has an IAT and MAP sensor, so why wouldn't the Protune software use SD instead? As far as that goes, why not use a MAF setup on some bikes? I understand the reasoning behind Alpha N on ITB setups, because of possible variance in MAP between individual throttle bodies. On a single throttle body like most American Vtwins, it just seems that SD would be better. This would also allow for a backup Alpha N table in case of MAP failure, just as many cars have. Or, like GM ECU's, you could add a MAF and have SD and Alpha N backups.