And can u/what benefits if any to using diff definition files for same bin? ...

Sorry I meant 7427! been doin a lot of reading on here and got mixed up. Anyways what I was wondering about is using a diff spark table outa another bin that is a little more aggressive to play with....

Also unrelated, I just installed a new Davis Unified dizzy and screamin demon coil and the instructions with coil says to open plug gap to .065! has anyone else used these coils and that much gap,...

Im running $od and was wondering if it was possible to use a different mask. Its a 7747 ecm. Im starting to get a grasp on on of this but am wondering about the differences in mask?