Hey guys. Running COS3, 2003.5 C5 Z06 Corvette. Pretty standard A&A corvette supercharged setup, SD tune.
I'm at 4300' elevation and typical atm pressure is 87 kPa. I was using Baro to log a custom "Boost" PID and noticed that the baro parameter was increasing after getting into boost and then it will stay at that "new" baro reading.
My concern is that once baro is updated, it's going to change the MANVAC value in the IFR table in particular and I don't want to end up chasing my tail tuning fuel.
Searched around here and hptuners forums and found a little info on here and almost nothing on hptuners.
I initially changed the various RPM, TPS and time values in the tune to avoid this update scenario per the EFI COS help guide.
Based on my observations and few discussions I found on here... there is a separate logic that sets a new baro if MAP exceeds baro under any condition, with a max of ~104 kPa. This checks, my baro always jumps from 87, to ~104 kPa.
Here in 2019, is there any known workaround for this? I set B0304 to 1.00 across the board based on a recommendation from a thread from 2005. Does B0304 play into this at all or am I SOL? A 20 kPa jump in baro isn't the end of the world....but if I can fix it now before I tune VE anymore, that would be ideal.