Supported Vehicles:
- WM 2011 1M
- WM 2008 - 2010 135i
- WM 2007 - 2010 335i
- WM 2011 - 2013 335is
- WM 2009 - 2010 335i xDrive
- WM 2008 - 2010 535i
- WM 2009 - 2013 Z4i
- WM 2011 - 2013 Z4is
WM = World Market (ADM, EDM, and USDM vehicles)
Map Revision: |
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ACN91 maps are not available for the 335IS models |
Stock Throttle vs. Linear Throttle
Stock Throttle: The stock throttle maps use the same throttle mapping that the car came with from the factory. For example, the stock throttle provides almost 80% of the requested torque load at 40% pedal input and gives the sensation of speed.
Linear Throttle: Linear throttle mapping is closer to a one to one ratio. If you push the accelerator pedal 30%, you should get roughly 30% throttle. The main advantage is the ability to better modulate power and more predictable performance.
Map Availability:
- Download from the COBB Tuning OTS Map Database.
Required Accessport Firmware:
- V2 Accessport: 1.6.5.0-5668 or greater
- V3 Accessport: X or greater
Each map lists the minimum required octane. A higher octane fuel can be used safely on a map designed for lower octane. DO NOT use maps designed for higher octane with lower octane fuels. Top Tier gasoline should be used where available.
- ACN91: lower quality 91 octane fuel, such as fuel found in Canada, Arizona, California, Nevada.
- 91 OCT or 95 RON: 91 OCT or 95 RON or better.
- 93 OCT or 98 RON: 93 OCT or 98 RON or better.
Stage 1
Stage 2
Each map lists the minimum required octane. A higher octane fuel can be used safely on a map designed for lower octane. DO NOT use maps designed for higher octane with lower octane fuels. Top Tier gasoline should be used where available.
- ACN91: lower quality 91 octane fuel, such as fuel found in Canada, Arizona, California, Nevada.
- 91 OCT or 95 RON: 91 OCT or 95 RON or better.
- 93 OCT or 98 RON: 93 OCT or 98 RON or better.
Peak Gain is the comparison of the highest point of output on one tune, to the highest point of output of another.
Above are the dyno results for a 2009 BMW 335i MT on our in-house Mustang AWD Dynamometer. Results may vary based on conditions such as particular model of vehicle, fuel quality, etc.
Generally speaking, the ACN91 calibration run slightly lower boost, has a richer fuel curve, and a less aggressive ignition advance map to help compensate for lower octane fuel blends such as those found in Arizona, California, and Nevada; and/or less than ideal atmospheric conditions. The 93 OCT or 98 RON maps are the most aggressive.
Map Version Notes:
Stage 1, 1+
| Stock Baseline | Peak Gain HP | Peak Gain Tq | Max Gain HP | Max Gain TQ |
|---|---|---|---|---|
| Stage1 93oct | +17% hp | +28% tq | +53% hp | +34% tq |
| Stage1+ 93oct | +35% hp | +25% tq | +90% hp | +10% tq |
Stage1
- Exhaust Requirements: Stock or upgraded cat-back exhaust
- Intake Requirements: Stock Airbox with Stock Air Filter, or aftermarket panel filter *
- Charge Pipe Requirements: Recommend Upgraded metal charge pipe.
- Boost Targets:
- ACN91: 11psi peak tapering down to 9.5psi by redline +/- 1.5psi
- 91 OCT (95 RON) Minimum: 11psi peak tapering down to 9.5psi by redline +/- 1.5psi
- 93 OCT (98 RON) Minimum: 14.5psi peak tapering down to 11.5psi by redline +/- 1.5psi
Stage1+FMIC
- Exhaust Requirements: Stock or upgraded cat-back exhaust
- Intake Requirements: Stock Airbox with Stock Air Filter, or aftermarket panel filter *
- Intercooler Requirements: Upgraded Front Mount Intercooler or equivalent required.
- Charge Pipe Requirements: Recommend Upgraded metal charge pipe.
- Boost Targets:
- ACN91: 14 psi peak tapering down to 10 psi by redline +/- 1.5psi
- 91 OCT (95 RON) Minimum: 14 psi peak tapering down to 10 psi by redline +/- 1.5psi
- 93 OCT (98 RON) Minimum: 14 psi peak tapering down to 10 psi by redline +/- 1.5psi
Stage 2, 2+FMIC
ACN91, 91, 93 Octane
| Peak Gain HP | Peak Gain Tq | Max Gain HP | Max Gain TQ | |
|---|---|---|---|---|
| Stock Baseline | ||||
| Stage2 93oct | +21% hp | +32% tq | +37% hp | +38% tq |
| Stage2+FMIC 93oct | +32% | +38% tq | +43% hp | +49% tq |
E30, 100 Octane
| Peak Gain HP | Peak Gain Tq | |
|---|---|---|
| Stock Baseline | ||
| Stage2+FMIC v402 Aggressive | +32% HP | +38% TQ |
Stage2+FMIC E30 / 100 OCT | +52% HP | +51% TQ |
Non-Performance Maps
Stage0
Simulated Stock Calibration. For use when stock-like behavior is desired. Note that Accessport is still installed to the ECU.
Valet Mode:
- Fuel Requirements: ACN91 or better
- Intake Requirements: Stock Airbox with Stock Air Filter, or aftermarket panel filter
- Exhaust Requirements: Stock or upgraded cat-back exhaust
- Boost Targets: Lowered
Revision Notes:
| Map Version | Notes: |
|---|---|
| v4.04 | Updated naming convention for all OTS offerings. Calibrations are unchanged to v4.02. Aggressive renamed to 93 octane/98 RON Sport renamed to 91 octane/93 RON ACN91 renamed to ACN91 |
| v4.02 | Minor Update for “Stage1 +FMIC” &“Stage2 +FMIC” mapping. Improved logic addresses boost and WGDC oscillations some users have experienced, allowing smoother power delivery and throttle response. |
| v4.01 | Minor Update for all maps. This update corrects DME logic causing possible DTC P2D59. This update also addresses an under boost issue experienced by some vehicles. |
| v4.00 | Major update. Introduces new “Stage1 +FMIC” mapping. Logic and tuning parameters have been adjusted in order to capitalize on Stage1+ hardware. “Stage1 +FMIC” mapping requires an aftermarket front mount intercooler. Minor update for Stage1 Maps; this update incorporates multiple DME logic corrections as well as tuning logic alterations allowing smoother power delivery and throttle response. |
| v3.01 | Minor update for Stage1 Maps. This update corrects the DME's torque logic which could cause a limp mode under hard acceleration at higher rates of speed. This update includes corrected logic to repair an issue with slight surging felt at part throttle when the engine is not at full operating temperature. This update introduces an additional "Linear Throttle map". This map is more Linear than previous maps and may be preferable for 6MT-equipped cars, though all versions are safe for all transmission types. Also included in this update are new mapping nomenclatures. Here is a brief description of the new naming conventions. *"Drive" is a nice daily driver map for those that want a bump in performance with stock rev limits. (Premium fuels recommend) "Sport" is a sporty map with a healthy performance increase and raised rev limits. (Premium fuels recommend) "Aggressive" is a map that geared towards those looking to achieve peak performance (Recommended 93 Octane). |
| v2.03 | Minor update for Stage1 maps. This update reverts the rev limiters to stock settings for AT vehicles. Revised torque reduction logic for improved shifting on AT-equipped vehicles. |
| v2.02 | Minor update for Stage1 maps. Introduces additional “ACN91” mapping, which is more conservative than our 91 octane mapping (intended for 91 octane fuel in the states of Arizona, California and Nevada) and also retains the stock rev limiters. Adds two alternate throttle mapping versions designed to suit multiple driver preferences and transmission types. Both versions add linearity to accelerator pedal; v2 is more aggressive than v1 at low RPM and may be preferable for 6MT-equipped cars, though both versions are safe for all transmission types. All maps receive slight revisions to ignition timing. Includes speed limiter fixes for certain 335xi vehicles. |
| v2.01 | Minor update for Stage1 maps. Includes improvements to performance for AT vehicles. |
| v2.00 | Major Update. These maps require the use of firmware version 1.6.3.2-1259 or greater. To update from v1.01 or earlier, please uninstall Accessport from vehicle, perform firmware update using Accessport Manager 2.0, then reinstall Accessport to vehicle with v2.00 or greater mapping. This revision now supports both MT and AT vehicles using the same mapping version. Also incorporates improved fueling strategies during turbo spool-up period as well as additional logic for torque limiter defeats. |