Epic Motorsports Spec E46 Dyno-Tested Race ECU

"Pre-stressed" flashed and tested ECU ensures software performance

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Currently sold out! Please contact us for the latest availability.

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Price:
$1,099.99

The Epic Motorsports Software calibration for the Spec E46 racing class makes a decent power increase (typically about 10hp 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 check-engine lights that are unnecessary on a race car.

This is a used MS43 ECU that has been pre-flashed with the SE46 spec software, sealed per series rules, and then dyno-tested on our dyno to ensure proper operation. It's "pre-stressed" and experienced some of the same conditions it will on track (which is better than buying a junkyard ECU and praying for the best). The cost for this ECU reflects the time to bench test and evaluate the ECU and run it on our dyno, in addition to the cost of the SE46 flash and EWS delete.

SpecE46 Software Features:
  • Optimized timing
  • Optimized VANOS timing
  • Optimized DISA engagement
  • Optimized fuel mapping for spec exhaust
  • Revised rev limits: 6500 1st-4th gear; 6800 5th gear
  • Several limp mode functions eliminated
  • Disabled emissions systems (rear O2 sensors, secondary air pump, evaporative emissions including for original gas tank, and misfire fault codes)
  • Speed limiters removed
  • Raised idle speed prevents stalling for lightweight flywheel
  • Coding for auto-to-manual transmission conversion
  • Read and Write protected (you will NOT be able to flash over this ECU file once sealed)
  • Fully sealed with tamper-proof seals
  • EWS-delete included
This software is only for Spec E46 cars - not your street car with eBay headers and cat-delete. The goal is to make a safe and reliable race car with none of the electronic nanny features that will disable a car on track. With this software, a Spec E46 build can remove the rear O2 sensors, secondary air system, original fuel tank (to switch to a fuel cell), and the evap system.

This ECU is ready to run, cutting out downtime during or build or keep as a spare ECU for the track. We know this is attractive to use as a trouble-shooting tool but there are no returns on this ECU. This ECU has been tested on our dyno. However, do not assume installing this will fix issues with your car - Epic Motorsports or BimmerWorld are not responsible for diagnosing your pre-existing problem. This software is designed to function properly with a racing car built to the SpecE46 rules.

Core Credit. We'll take back your original MS43 ECU and give you a $100 credit! To offer pre-flashed ECUs we need original, working MS43 ECUs first. So we'll pay you for your original. Please don't send back bad or damaged ECUs - they are of no use to this program.

Notice of Emissions Non-Compliance. This product is intended only for racing vehicles that may never be used, or registered or licensed for use, upon a public highway. Removing, disabling, or altering emissions equipment on a pollution-controlled road vehicle is illegal. Installing devices or software that trick, disable, or modify emissions controls and monitors on a pollution-controlled road vehicle is also illegal. This product is sold only for racing, competition, track, hobby, or other off-road use. It's use is prohibited in any motor vehicle that is subject to emissions inspection or control. It is not legal for installation or use on any pollution controlled motor vehicle in any state, province, or jurisdiction governed by, or which has adopted, CARB or EPA regulations. BimmerWorld may confirm a customer's racing license, entry, track participation, and we may ask for photos or proof of a permanent race car build. We reserve the right to cancel part(s) that are not for legitimate racing or track purposes.

BMW Fitments:

3 Series
E46 (99-05) > 330Ci
E46 (99-05) > 330i
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