Ok, cheers fellas, @ R4N SS, I've got a 2.5 bar boost gauge fitted already, albeit a Racetech one that I'm gonna change for one with peak recall, my problem isn't that the arcs monitor only seems to measure up to 2 bar, its that it flashes up a warning every time it sees that level of boost, I'd be happy if it didn't monitor boost at all tbh lol, I've got someone interested in buying my secs monitor if I can find a suitable replacement, does the IECS monitor read over 2 bar or is it restricted by the map sensor? I assume a 3 bar map sensor only measures up to 2 bar positive boost?