Hi guys I got couple questions. With all my mods..vito 240 ported by Ken, +3 stuffed crank, 34mm pj, lrd pipe, vforce 4 reeds and other mods would it be wise to run cooler plug. A 9 instead of an 8. Other question..is it worthwhile to advance my timing 4 degrees. What are the pros and cons. do you recommend more I can go as far as 7 degrees. All you blaster pros can help shed some light on this for me. Thanks in advance guys.