I would be content on low 10,s as I realize the utes are extremely hard to get into the 9,s the nos was a piece of piss,theres only a couple of rules to abide by,do that and your all sweet!!it only took one power run on nos to make that power.. so we havent even bothered to muck around with timing to make more power,as im happy at that for a staring point. cheers lee