Fitted the MBC last night. Guestimated where it was set to, took it out for a run, let it warm up, and got 12-12.5PSI in 3rd/4th/5th (for setting up purposes).
The ST185 has fuel mappings for between 12-14PSI max depending on
1) temperature 2) fuel quality 3) atmosphericsbefore the fuel cut kicks in. Decided that might be a bit close to the wire for a 15 year old 146k miles car. Backed it off 1/2 a turn. Now boosting all gears at 10PSI, instead of 6 in 1st and 2nd, and 8psi in 3rd, 4th, 5th.
That means half a turn is roughly 2 psi, so I might just give it a quarter turn more. Then it will go upto 11. And 11 is better than ten isn't it. Stands to reason.