I've got an E60 535d which i got remapped about 1 year ago. Loving it!
I am now considering a powerflow exhaust upgrade to get some more bhp and torque from it.
After speaking to the guy who would carry out the exhaust upgrade he thinks i might need another re-map or remap mod after the exhaust upgrade as the onboard computer would sense a problem with the partical filter in the new exhaust (as in there isn't one any more) and i'd have the alarm on constantly.
Anyone got any experiance in exhaust upgrades to a 535D or any other BMW with the exhaust partical filter fitted??