you're not going to gain much by changing it..maybe a little below the normal engagement point..but how handy is that? the big benefit to vtec controllers is the ability to raise the engagement point with extra lumpy cams. at one time i had a swapped hatch(b18c1) well i installed some pretty aggressive cams, and after the airfuel was straightened out i actually lost power after engagement. i might've been able to get it back with ignition tuning ,but i didn't have anything capable of adjusting timing in specific parts of the band. so i just raised the engagement point and everything came out ok.hope that helps.