Hi Danny,
Just to clarify what has already been said, the 3 bar MAP sensor will only "see" boost pressure of up to "29.4psi", this is the nature of the sensor (it is called 3 bar, because it reads atmospheric pressure + 2 bar). This is why people harp on about fitting 5 bar map sensors when running big boost, because the ECU will only be told that the engine is running 29.4psi, even if it was seeing 35psi, because that is the limit ("end") of the sensor range... The way tuners get round this when running big boost and the 3 bar MAP sensors, is to extrapolate the afr curve and throw sufficient fuel in to suit the required boost.

Be aware that the SECS monitor is just telling you what the MAP sensor is seeing and it is not a boost gauge as such. Saying that, usually the MAP sensor is calibrated to "see" a max of a fraction over 30psi.