Quote:
Originally Posted by Kzang
According to the official BMW document for MPPK
– Comparable consumption despite higher performance.
Fuel consumption and emissions levels in the ECE
driving cycle correspond to those of the series engine, even
though the M Performance Power Kit boosts the engine's
performance by an additional 6.66%
See attached for source.
For me.. I have not seen any difference in fuel consumption without and with MPPK. I also have RCU piggybacked as well.
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Kzang, is the MPPK + RCU still doing it for you? Any reason why I shouldn't do the same? The racechip has been great for me but I am teetering on the fence about doubling up with the MPPK.