My 335is dynoed at 319whp on a DynoJet with 93 octane against the 320BHP that BMW advertises it at. Saw the 1M dyno at 331whp against the 335BHP that BMW uses. So the 1M is stronger & in proportion to the advertised spread. It would be a bit more of a tune in the ECU because just about everything else is the same.
Main thing is both numbers are bogus because using the CHP/BHP scale they both are under-rated quite a bit.
2014 BMW 435M-Sport
2013 BMW 135is 6MT conv JB4/ISO
2009 Ford Expedition 4X4 EL - 2009 V-Star
2003 Nissan Xterra 4X4 - 1998 Ford Ranger 4X4 Splash
FFR Cobra Mk-IV work in progress
Last edited by bear-avhistory; 02-22-2013 at 06:20 PM.