AAF Epic Spec E46 ECU

AAF Epic Spec E46 ECU


In stock

Sealed Epic Spec E46 ECU Tune ($599.99), PLUS EWS delete ($200.00), and optional core charge ($100.00)

We do not offer Spec E46 ECU tuning without EWS delete.  We have had several EWS failures which prevent the car from running, losing expensive track time. We know you will be much happier this way.

AAF offers a couple of unique options. You can either send your ECU directly to EPIC (see processing instructions below) which is about a 1 week turnaround. Now, with EWS removed, any ECU can start any SE46. This means that AAF can provide a core. If you do not wish to receive your exact ECU back we can ship you a sealed and tuned ECU. This will most likely net a much faster turnaround, and we usually have some in stock. You can then either keep your ECU as a backup, or send your ECU to us for refund of the core charge.

Notice: With the “EWS Delete” ECU, some components can be removed. However the EWS box cannot be simply unplugged. The EWS box doubles as a starter relay. Your two options are to 1) keep the EWS box plugged in with no wiring harness changes, or 2) to modify the OEM electrical harness and install an independent starter relay.

Components that can be deleted are items such as the instrument cluster and the key itself. These items can simply be unplugged and removed with no adverse effects.

The Epic Motorsports Software calibration for the Spec E46 racing class makes a great power increase (typically about 10 HP over stock, but this is NOT a guaranteed number), provides a proper calibration for the spec race exhaust for this class, ensures reliable and safe operation of your engine, and removes many of the pesky electronic nannies, emissions issues, and lights that are unnecessary on a race car.

This software calibration requires that you send your ECU in (we CAN provide a core), and the software upload is performed only at Epic Motorsports. The ECU is then fully sealed by Epic and returned directly to you. If you need your ECU returned by a certain date, please contact us to ensure proper handling and to determine expedited shipping needs – please allow one workweek for turnaround.

Features and Benefits:

  • Optimized timing
  • Optimized Vanos mapping
  • Optimized DISA engagement
  • Optimized fuel mapping for Spec exhaust
  • 6500 1st-4th gear rev limit, 6800 5th
  • Several limp mode functions eliminated
  • Disable emissions systems
  • Speed limiter removed
  • Raised idle speed prevents stalling due to lightweight flywheel
  • Manual transmission coding for proper automatic to manual transmission conversion operation
  • Read and write protected. You will not be able to flash over this ECU file once sealed
  • Fully sealed with tamper-proof seals- replacing these seals will require return to Epic Motorsports for a full inspection and potential reflash (add additional charge)

For all ECU work, you must send the ECU from your running car as a core.  7/2003 production is the approximate change from Ms43 to the Ms45 ECU, but please confirm by visually inspecting the label on your ECU before ordering.  This race-spec calibration is for E46 330 cars only.

Order Processing:

Pre-Tune Procedure:

You must have a properly running car before tuning your ECU.  Adding the Epic calibration to your ECU will not solve your pre-existing problem or make Epic Motorsports or Advanced Auto Fabrication responsible for diagnosing your pre-existing problem.  Please read any fault codes present and get the problem fixed prior to upgrading. (Some fault codes are normal for race cars with generic software; please provide us with a list of the codes for review including the fault name and BMW fault number).

Processing Instructions:

You will need to remove your ECU and send it directly to Epic Motorsports for them to load the Spec E46 calibration and seal the ECU. Insure your package for $600 and include a printed copy of your Advanced Auto Fabrication order. Then email your tracking number to aafracing@outlook.com and include your Advanced Auto Fabrication order number in the email.  Ship insured ECU package to:

EPIC Motorsports
Attn: AAF SE46 Processing
13725 SW 139th Ct. Suite 107
Miami, FL 33186
The sealing process of your ECU is not as simple as a custom flash, and therefore will require up to one business week for processing.  Rush processing is available with prior planning – you MUST discuss this with your salesperson at the time of ordering to determine if existing work schedule allows the expedited processing.
Once sealed, your ECU will not be able to be overwritten or modified in the future. You can have Epic Motorsports reverse this procedure in the future for a fee, which will require opening the ECU and breaking the Spec E46 Seals. If your Spec E46 seals are broken, you must return your ECU to Epic Motorsports for a full inspection and potential reflash (and additional charge).