I think most of today's cars have a dual-mass flywheel. It helps to keep the chatter down and absorb vibration. The 1M's unit is just a lighter weight version and shouldn't have a problem taking on additional torque.
You've got to have a very understanding service department to get a way with a warranty issue like a HPFP failure or any engine related problem with aftermarket downpipes installed. Normally, changing anything with a sensor in it or having an affect on a sensor is a no-no.
'13 M3 E92 SSII | 6MT | ZCP | ZPP | EPS | NAV | MPE | ED & PCD