That's good news about the short circuit. Shame the hillclimb is still a problem.
I expect to be 'finally' tuning the V6 next week so will have a clearer picture on the sound levels.The exhaust spec Neil gave me for the engine was pretty much the Evora GT2 spec which is about 100db. I decided again this as I have always planned on Lakeside/Sandown and Marulan so hopefully it will be ok. Relocating the muffler onto the boot has cut the sound down since the first time it was started. May even fit some sound deadner in the boot to contain it. Its a minor weight penalty but will help a lot with getting it over the line.