Few more graphs, DCS-4 and the DCS-5 with a Q-V2 , still have some more refinements that I should start working on sometime next week then back to the dyno, DCS-5 looking better but I want smoother lines, better Exhaust Flange set up also. and better silencer set up, The goal is to pass Q -V2 on Low Mid Top HP and Torque, But.... with a standard 90s type porting.
We seem to be fixing that flat spot between 6000 to 7000 RPM