Originally Posted by Zuzu
Ok.. have gained 12Kw ATW with the N55 mids..
Dyno chart shows runs with "M" button OFF at 242.5Kw, then with "M" button activated on 258.1Kw ATW
Stock runs with OEM 1M mid pipe with "M" button activated was 246Kw ATW.
"M" button activated makes a 16Kw difference on Dyno charts..
Surely, from the figures you've posted, it's a 12.1Kw difference? (246 stock with M activated vs 258.1 with the mid pipes on and M button activated 0 258.1 - 246 = ???
The results worry me in any case - power should be the same with th M button on or off if you're WOT, so I wonder if there is an error in the procedure?
2011+: VO 1M Coupe, many toys, Evolve Stage 3. 2008-2011: 135i M Sport Le Mans Blue / Lemon / HGSL. Comfort Access, Auto−Dim, Elec Seats + Memory, Lumbar & Heating, PDC F+R, Xenons + Adaptive, Cruise, Nav Pro + Assist & Online, Voice Control, Bluetooth, DAB,6 Disc, Prof Hi−Fi (L7), USB/audio interface, BMW Performance Carbon Fibre interior, Evolve OBD remap - 390bhp. Also in the family: Land Rover Defender 50th Anniversary 4.0 V8, 11 Mercedes E Class Cabriolet Sport.