Quote:
Originally Posted by TDIwyse
I've been using 85%. It seems to be fairly close at most temps and mid/upper boost levels. But recent testing has shown that at extremely low ambient temps this causes Torque to under report peak boost values relative to the analog gauge. At 4F it seemed to be low by ~5-6 psi. At 25F it's about 2 psi off. My memory from a couple years ago when doing this comparison was that at summer temps the values were extremely close for most of the rpm/boost range.
Also, at the level of power my car is at the MAF output is becoming saturated at higher rpm levels so this causes some under reporting of boost above ~4000 rpm as Torque is using a calculation that relies on the MAF sensor.
But, other cars may be different than mine in many of these areas ...
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Thanks TDI. Can you confirm that in Torque settings you have left boost adjustment at "zero". Please and thank you. I wish BMWhat would have a boost parameter. Seems weird not to have one.