Epic Motorsports Race Software - E46 325i/330i

Proper calibrations and features for an E46 race car

+ -
+ -
+ -
+ -
+ -
+ -
+ -
+ -



  • +15hp*
  • +16ft-lbs*
  • Race-only software for race cars with emissions, SAP, and Evap systems removed

* - based on 91 octane, more power available with 93+ octane option

Epic Motorsports software increases power and torque output, smooths power delivery, and improves part-throttle drivability. This version of Epic software is designed for race cars running with headers, cat-delete or sport cats, and the secondary air pump and evaporation systems removed. Race cars built for racing use require specialized software to operate properly and this software tune has been professionally developed by the Epic and BimmerWorld racing teams. Note that software for the SpecE46 racing class can be found by clicking here.

ECU tuning modifies the data in the engine computer (ECU). Ignition timing tables, fuel injection, camshaft timing and VANOS, and other data is changed to make more power reliably and without affecting the durability of the engine. This is dyno-developed and race-proven power gains engineered in-house on the Epic and BimmerWorld dynos. In addition to the engine tuning, the rev limit is raised to 7,000 RPM and the top speed limiter is raised/eliminated. Race software is available as either 91 or 93 minimum octane ratings. Additional timing advance on 93 will result in slightly more power but will have less knock resistance in extreme temperatures. The 91 setting may be best for hot climates where too much timing in extreme temps may result in engine knock.

Bench Flash (no additional charge): send your ECU to Epic for a direct flash. No hardware required but the car will be inoperable for a minimum of 3 business days.
ECI flash cable (+$99): a cable is sent that works with software on a Windows PC laptop. You read your stock file and email it to Epic and a tuned file is returned. You keep the cable for future flashing. It also works as a diagnostic tool through your laptop. There is no downtime while the tuned file is being processed.

Because Epic software is custom and made using only your original file (not a pre-configured file sitting on a shelf) this product applies to all 2001-2006 E46 325i/330i, including both MS43 and MS45 computers. Your tuned file will be correct for either ECU as it's based on your original file.

Epic Updates/Revisions: Epic includes 1 revised flash at no charge with your order. If you decide the file needs a change, such as the throttle is too sensitive or you want a new rev limit, Epic will reflash the ECU with a revised tune at no charge. If the new file has an advertised price higher than your original purchase you will only be responsible for the price difference.

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. Some suppliers have shipping exceptions to certain states or territories, requiring extra delivery time. We will advise you of any delays.

BMW Fitments:

3 Series
E46 (99-05) > 325Ci
E46 (99-05) > 325i
E46 (99-05) > 325xi
E46 (99-05) > 330Ci
E46 (99-05) > 330i
E46 (99-05) > 330xi
Recently Viewed Products