Around 12.5 at full boost (22psi) around 10 part throttle and around 13 cruising in 5th @ 60mph. It is doing that thing where it seems to run out of fuel and pops and bangs by the time you get to 4th making it tricky to listen for detonation. Your thoughts please ta oh and its running a 130 main jet not sure of the rest of the carb bought it second hand on the understanding that it was a group A carb (it came with a 150! Main jet)
james