Yea it seems odd, I was hitting 23.4 but I had my wastegate hose fixed cause it was overboostimg but I was still hitting 17 and higher. Ever since I got the car back from dealership I can barely get past 12.5-13.0 and that it WOT.
And I’ve been going to the same station for my gas and using Shells 91 nitro +
It can. Your boost pressure is the pressure above ambient pressure. So if you have 10psi of air pressure plus 15psi of boost pressure there will be 2 readings. The boost pressure of 15 and the map reading of 25
I cannot explain why, but mine sounds exactly the same as yours. When mine was new, I'd get that 20ish spike but now I never get that high. For me, it is not an issue. I actually prefer to not have the high spike.
Maybe these cars are like Apple devices where they purposely slow down as they age.
in my 17 WRX Id peak at 20-21 psi in warm weather, but in winter or colder weather, esp under 30 deg F Id see peak boost 15-17 maybe. Figured the ECU limited boost depending on temps. It was pretty consistent.
In my 18 STI, peak boost in cold weather (30s) is like 14-15, when it hit 70 for a few days I saw 16-17
Yours however sounds like they left a rag in the intake or something. Just not right
Yea before I brought it in to the dealership to fix a wastegate hose, I was hitting that spike boost and getting higher numbers like most all other wrx owners are getting also. Now I can barely get 14 which seemed off. Car is also fairly new with only 2000 km.