According to an article I read in a boating magazine, the only difference between the BF150 and the BF135 is that the BF135 doesnt have the ground wire hooked up to the VTEC spool valve and the ECU mapping to control the variable valve timing.<br /><br />Would it be possible to hook up the ground wire to the VTEC spool valve and have the ECU re-mapped to control the variable valve timing?