[JustDriveIt]

I was surprised to not find this information in any search.

Is there no way to plug your computer into the OBD port and view boost?

I can view wastegate position but do not see a boost pressure anywhere in INPA.

[808AWD325xi]

Originally Posted by JustDriveIt

I was surprised to not find this information in any search.

Is there no way to plug your computer into the OBD port and view boost?

I can view wastegate position but do not see a boost pressure anywhere in INPA.

No, 335's with a N54 engine don't report boost pressure via OBD, only via CAN. The MSD80 INPA script receives intake manifold pressure, boost pressure, and intake air temperature with one API call, but it does not display the boost pressure. The value for boost pressure is STAT_PS_IST_WERT:

	<JOB>
		<JOBNAME>STATUS_SDF2</JOBNAME>
		<JOBCOMMENT>0x301901 STATUS_SDF2</JOBCOMMENT>
		<JOBCOMMENT>Saugrohr-, Ladedruck und Ansauglufttemperatur fuer N54 auslesen</JOBCOMMENT>
		<JOBCOMMENT>Aktivierung: Klemme 15 = EIN</JOBCOMMENT>
		<JOBCOMMENT>Activation: LV_IGK = 1</JOBCOMMENT>
		<RESULT>
			<RESULTNAME>STAT_PVDKDS_WERT</RESULTNAME>
			<RESULTTYPE>real</RESULTTYPE>
			<RESULTCOMMENT>Druck vor Drosselklappe (nur N54)</RESULTCOMMENT>
			<RESULTCOMMENT>PVDKDS   Einheit: hPa   Min: 0 Max: 2559.9609</RESULTCOMMENT>
		</RESULT>
		<RESULT>
			<RESULTNAME>STAT_PVDKDS_EINH</RESULTNAME>
			<RESULTTYPE>string</RESULTTYPE>
			<RESULTCOMMENT>hPa</RESULTCOMMENT>
		</RESULT>
		<RESULT>
			<RESULTNAME>STAT_PS_IST_WERT</RESULTNAME>
			<RESULTTYPE>real</RESULTTYPE>
			<RESULTCOMMENT>Druck nach Drosselklappe (nur N54)</RESULTCOMMENT>
			<RESULTCOMMENT>PS_IST   Einheit: hPa   Min: 0 Max: 2559.9609</RESULTCOMMENT>
		</RESULT>
		<RESULT>
			<RESULTNAME>STAT_PS_IST_EINH</RESULTNAME>
			<RESULTTYPE>string</RESULTTYPE>
			<RESULTCOMMENT>hPa</RESULTCOMMENT>
		</RESULT>
		<RESULT>
			<RESULTNAME>STAT_TANS_WERT</RESULTNAME>
			<RESULTTYPE>real</RESULTTYPE>
			<RESULTCOMMENT>Temperatur vor Drosselklappe (nur N54)</RESULTCOMMENT>
			<RESULTCOMMENT>TANS   Einheit: C   Min: -3276.8 Max: 3276.7</RESULTCOMMENT>
		</RESULT>
		<RESULT>
			<RESULTNAME>STAT_TANS_EINH</RESULTNAME>
			<RESULTTYPE>string</RESULTTYPE>
			<RESULTCOMMENT>degreeC</RESULTCOMMENT>
		</RESULT>
		<RESULT>
			<RESULTNAME>JOB_STATUS</RESULTNAME>
			<RESULTTYPE>string</RESULTTYPE>
			<RESULTCOMMENT>"OKAY", wenn fehlerfrei</RESULTCOMMENT>
		</RESULT>
		<RESULT>
			<RESULTNAME>_TEL_AUFTRAG</RESULTNAME>
			<RESULTTYPE>binary</RESULTTYPE>
			<RESULTCOMMENT>Hex-Auftrag an SG</RESULTCOMMENT>
		</RESULT>
		<RESULT>
			<RESULTNAME>_TEL_ANTWORT</RESULTNAME>
			<RESULTTYPE>binary</RESULTTYPE>
			<RESULTCOMMENT>Hex-Antwort von SG</RESULTCOMMENT>
		</RESULT>
	</JOB>

Tool32 gave me a reading of ~0.05 psi of boot pressure at idle. I'll probably try it again later today under load.

You should be able to log STAT_PS_IST_WERT with Test-O:
INPA Logging