Just finished running in my .21 5 Port Turbo on HB444 fuel and it just gets better and better!!!

For the same price as my Novarossi 3 Port Roto its phenominal!!!

Only got roughly 2 litres on it so far and it is still very tight but already the power (Both in my Hyper 8.5 and Mugen MBX5T) just makes my grin bigger and bigger

Strongest idle of any engine i have ever seen and once you get your head around the Go Carb its a breeze to tune!

Couldnt be happier.