So finally got to order my custom tune today from Rick at Amazon. I have been running the 91 octane pulley canned tune from my predator. My mods are, lightinig upper 2.93, 4lb lower, ported eaton charger, single bladed throttle body, good plugs, CAI, exhaust! So what will I expect in drivability, performance, power, any milage increase ect..............