The Epic Motorsports Spec E46 Tune is extremely locked down, making diagnostics and troubleshooting difficult on these “modern” electronically controlled engines.
This product is a Genuine BMW supplied Siemens MS43 DME, which has been reflashed with the very latest firmware and has the EWS features (anti-theft) removed. This allows you to install it in any M54B30 powered E46 for the purposes of reading trouble codes, live data, or simply testing by process of elimination.
These DME’s have been tested to work with INPA and other OBD scanners. The actual engine mapping is a completely stock BMW tune and provides no performance benefit over a standard DME (ECU). They will still throw codes for removed or otherwise disabled equipment (unless you choose the options to delete these systems), but will run the car.
All adaptations have been cleared from the DME, so your car will require a relearn to run properly. Typically 2 minutes of idling before driving will accomplish this. When shutting down your race car, be sure to shut down the ignition first and wait around 20 seconds before disconnecting the battery (kill switch) so any adaptations can be written to the DME.
NOTE: These DME’s are not legal for racing in the SpecE46 class and are intended for repairs, maintenance, and diagnostics work. There is no guarantee they will pass your local emissions requirements and are intended for off-road use only.
Core Return Instructions:
It is not required to return a core, only if you wish to receive a core refund. Your core must be in working condition without any dents to the case or damage to pins/connectors.
Ship the DME in a well padded box to (be sure to insert your order number):
Morehead Speed Works
DME Core: Order #XXXXX
347 Riverchase Way
Lexington, SC 29072