BMW 3-Series (E90 E92) Forum - View Single Post

e.n335 · 09-27-2009, 02:53 PM

Hi,

Measuring my boost via OBD II ( Auterra Dyno Scan 8.0.9 ) I get 17.4 psi = 1.2 bar boost. My vent gauge ( post FMIC pressure ) shows < 15 psi always. Is the ECU OBD II boost sensor located before the IC and / or what kind of data is the ECU OBD II sensor delivering ? Is it the REAL boost the turbos have to provide, respecting altitude compensation and FMIC pressure loss ? What's going on here ?

Thank you in advance,
Eugen

09-27-2009, 02:53 PM	#1
e.n335 Moderator 270 Rep 4,481 Posts Drives: e93 ///M3 DCT, 07/2009 Join Date: Feb 2007 Location: Switzerland, ZH iTrader: (0)	Where is Boost measured by the ECU Hi, Measuring my boost via OBD II ( Auterra Dyno Scan 8.0.9 ) I get 17.4 psi = 1.2 bar boost. My vent gauge ( post FMIC pressure ) shows < 15 psi always. Is the ECU OBD II boost sensor located before the IC and / or what kind of data is the ECU OBD II sensor delivering ? Is it the REAL boost the turbos have to provide, respecting altitude compensation and FMIC pressure loss ? What's going on here ? Thank you in advance, Eugen
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