MarkDj said:
Hello and welcome to the forum. Nice VX220 you have 🙂. What mods have you done to the engine so far?
Just a lightened flywheel (5,5 kg) and a custom (my own design) exhaust (manifold and all the way back...)

A 4-1 manifold with equal length headers and the lengths tuned to a top of 7000 RPM.
Planning to change the exhaust a bit (another silencer/backbox) this spring and adding a custom inlet manifold with a 68mm TB, then it's time to open up the engine for real... But havn't yet decided on what cams I'm going to use.