Rich....i have always done my engines myself...admittedly my first build for the Stage 3 was helped in conjunction with a pro ..after that only the machining was pro done...but as everyone says building an engine is simple..speccing aint and i spec all my engines myself ...Mapping..well a good base map to start with is essential and having the pro tools to set it up and fine tune...I feel its as DIY as you could possibly go.....

Fuck the doubters...who cares about them anyway ...anyone can pay someone to do it for em then critizise us who'd rather do it ourselves!