I now have a competition cnc ported head. 395/378's at 107/109 now. I am runing a little fatter on the nitrous. 12.0 a/f pulling 5 degrees of timing. I went a little safer. Still runing U4.4 fuel. The bike runs good on u4.4 motor only at 13.1 compresion. I have thought about trying q16, but in previous attempts it has ran slower NA on q16 then U4.4. I run motor only 90% of the time. I know alot of guys run mrx01 (98mon) with a 60-80hp shot. U4.4 is 103MON. 100hp is about the highest I am going to go with U4.4. If I go higher I will use Q16. I currently do not have any plans to go higher then a 100hp shot.
The bike is primarily meant for e.t. racing so I run NA most of the time. Nitrous is just a backup plan B incase I wheelie up or screw up a sixty. Of course it is fun to go fast so every once in awhile on a test and tune I will make a few nitrous passes. At some of the biger events where I know the track prep will be good I will e.t. race all day useing the nitrous. Useing ecu editor for the nitrous control and a regulator to hold the nitrous presure consistent has actually made this bike very consistent for e.t. racing with nitrous. I know their are better nitrous controllers out their, but ecu editor does a decent enough job for what I am useing it for. If I was going all out in a heads up class I would be useing something different for the nitrous control.