Silver Bullet - I have Deweys Gilamonster heads with SE257, 10.3 compression, and Im wondering how to modify the SEII slip-ons for this build (afriends bike). I started by drilling out the holes 1/16". When the tuner dynod the bike, he ended up opening the flap all the way, making 107HP and 100TQ. TQ seems low, so Im thinking that its because the flap is opened up. Should I drill the holes out another 1/16" and go from there (after closing the flap)??
Thanks.
Thanks.