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Just for the record, there are some notable differences in the Z4 INA0S compared to 335is INA0S. I expected them to be closer, but spool mode on Z4 is 3000. I and D tables are the same, but much different D Factor multi. P factor is different, as are VANOS and Sport mode torque request. WGDC base and spool are 30-100% higher on the Z4 bin in low MAF /mid setpoint ranges. There are other values that are double the 3 series in pressure pre-controls as well (undefined tables in the public XDF).
Load target is lower, torque ceilings/breakpoints and high RPM reductions are different. Most of the differences would appear to favor increased boost and/or calculated boost on a lower target in that 2500-3000rpm range compared to a 3 series.
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