BSFC lines can be very useful when they plot bsfc against load for a given rpm and an external variable condition.
If you get a chance to put your TDI on the dyno and have some spare time. I would like to see 2 bsfc lines.
One line at 2000 rpm from 0 to 100% load with a big fan blowing on the IC.
The same thing but with a heater blowing toward the intake and no fan on the IC.
Log MAP, MAF and IAT at the same time if possible.
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