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All good points although we should compare apples to apples. You can’t compare NA to FI, single TB to dual-TB systems etc.
The DME can compensate for the 6-7% flow increase similar to compensating to 4psi increas in boost with a piggyback system (ECU has no idea boost is increased other than a higher demand for fuel and the necessary timing that goes with it).
However with any system, tuning specifically for it extracts the most power. I have pushed > 1100whp on my M5 and pretty much still hold all the performance records for this platform so the proof is in the pudding.
In any case I am out of the M5 scene now so won’t be making any more of these.
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