Well after swapping a stock 99 ECM in for my mapped(?) ECM and seeing it had the same effect as mine(hestitations below 3k)I ruled out my ECM being fried so I just put mine back in, mapped it at 5,5,5 and 11:00 and rode it. Still has hesitations when riding below 3K, especially when free revving it. Still smokes slightly when free revving it hard but doesnt seem to when under full load so I am not going to worry about it. I have checked everything hoses,connections,sensors, fuel filter(inline) and have tried every possible mapping combination with the YOSH box.Also put in fresh plugs. I am thinking of either trying a PC2 or putting a stock air box back on. For the kind of riding I do, it is worth it to me to lose 4 or 5 hp to gain hesitation free throttle response and good low speed torque which I have lost, although this may be due to the incorrect calibration of the EMC. Any other suggestions? Also looking for a good shop with a Real dyno with a Air/fuel tester in South East Texas. Thanks for the help guys!! JCheese, how was The Temple Track? Did you roll?