Epic Motorsports Race Software - E85/E86 Z4M

+26hp / +19ft-lbs. Dyno proven to provide the most power from your S54 engine

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Peak Power Gains:
+26whp @ 6,950 RPM
+19wft-lbs @ 6,500 RPM
Solid 23+ hp gains from 6,500-8,000 RPM!

Epic Motorsports software tuning for the Z4M S54 consistently provides more gains than any other tune on the market. No other tuner has as much experience building, tuning, and racing the S54 engine than Epic Motorsports and BimmerWorld. It's this depth of experience that allows Epic to extract more power and torque. S54 software is available in three stages - performance street, race, or Alpha-N.

Race - tuned specifically for cars that see full-time track duty and have cat-delete, headers, straight exhaust, and other mods. The tuning is done based on popular mods used in our own race cars as well as others we have built for customers. Typically the tuning is the same as our Performance tune but with track-specific changes such as EGT and O2 sensor thresholds and other changes for track duty. Race software is sold for off-road use only (see emissions info below).

Alpha-N - Alpha-N is a true custom-built file that requires dyno tuning to dial in your engine and get the most horsepower and torque. Click here for our other listing for Alpha-N info and ordering.

Software is installed with the Electronic Calibration Interface (ECI), which is discounted but sold separately. The ECI is connected to the OBD port in your dash and a Windows laptop. There is nothing to modify or remove and you never have to worry about modifications to the wiring harness. The ECI tool will read and save a copy of your stock software, which is then e-mailed to us for modification. A new tuned version of your original file is returned to you. This is better than off-the-shelf software tunes that never look at your original software. You can continue to drive the car while your tuned file is being processed.

Notice of Emissions Non-Compliance. 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, 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 sale or use in California on any pollution-controlled motor vehicle.

BMW Fitments:

Z Series
E85 / E86 Z4 (03-08) > Z4 M
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What customers are saying...

  • I am extremely pleased with this order. The price was competitive and your expedited delivery charge was surprisingly low. I needed the part fast and you exceeded my expectations. I especially appreciate your gentleman who over the phone ensured me that the part was indeed in stock and would be shipped immediately.
    - Allan Read More
  • I’ve never dealt with a true “race” shop like BW and I really have enjoyed the experience. I always feel like I’m getting the best advice, and suggestions for true race car set up. Your technical expertise on even the minute details of building race cars is really impressive, and some I value greatly...
    - Paul Read More
  • I just can't express enough how impressed I am with you guys. Thanks so much for the great service from start to finish, and always done with a smile and as professional as possible. Our particular interaction has extended over many months and never have I felt that I wasn't getting first-class service...
    - Chris Read More
  • I just wanted to say what positive experiences I've had over the past few weeks. Your BimmerWorld sales staff have gone above and beyond to help me out, between their service and taking the time to answer all my questions, I'll be buying my parts from BimmerWorld whenever possible...
    - Aaron Read More