Originally Posted by teamlosi906

Question I tried the fms this past weekend in my truggy, Its fully broken in,running 30% byrons, stock head shims,oddonell 97t and the new nova #6 plug 6.5mm restrictor. tried a 9901ss 021 header, 053, thunder tiger 2035, losi re 10, sirio 2013 pipe,new tank and fuel lines also. One min it runs perfect on the bottom end snappy,then 10 seconds later has a slight bog,then snappy again?? Cant get it right.New clutch asm also 2 alu with gold 2 comp green springs. My plus 4 runs perfect. So its not anything with the truck.No matter how i tune it, rich bottom, lean bottom, Tune temps in the 220 to 270 range, No leaks on the motor,new bearings also.