I noticed on data logging I'm getting 104 KPA on a NA build. As I understand it, this is the upper limit for the MAP. This is anytime it's WOT. Is this normal? Is this a problem that should try to be addressed? I noticed on the MAP In dynojet software it's 100 limit. What map is it using then to adjust AFRS and spark? Just trying to learn. I currently have the HPI V2 breather setup with heads done to atmosphere. Any information is appreciated.
100 kpa is based on the perfect day at sea level. 14.7 psi or 29.92 in of mercury. If high pressure comes through. KPA will go up. Low pressure system comes through and kpa will lower. Seeing higher than 100 isn't a big deal. 104 kpa equals 30.7 in of mercury. Not uncommon to see this pressure.
There is a map normalization table that allows you to tweak this reading some to align more of reported pressure of the day.
Some DJ vision cals have 95 and 104 as break points.
Thanks hrdtail78.