Earlier this year, with the release of Accessport tuning support for the 2020 Subaru WRX, we launched our first subset of Off The Shelf (OTS) Maps using the 2nd Generation COBB Custom Features (CCFv2) ECU type. Historically, COBB’s OTS maps have been based upon the standard ROM and did not take advantage of COBB custom features or updates from Subaru that were integrated into the CCFv2 ROMs.
We’re excited to officially release all 2015-2020 Subaru WRX 6MT OTS Maps using a CCFv2 ECU definition file. The following v360 files have all been updated to take advantage of CCFv2 features such as Per-Gear Boost and Ignition Control, MAF Simple, IAT alternate source, and Closed Loop Fueling which provide a much more consistent and reliable calibration. This ECU type also includes the latest Subaru ECU logic/calibration for the DIT WRX, including battery life improvements for 2015-2017 WRX. Since their initial release at v350, 2020 WRX maps receive minor updates to boost control, boost limit, ignition timing air temp correction, and fueling. Other changes of note are the addition of High (HWG) and Low (LWG) Wastegate files. These can be used on cars that either fall short or overshoot target boost, respectively.
To access these map files, simply update Accessport Firmware using Accessport Manager (to firmware version 184.108.40.206-17011 or newer) or download them from cobbtuning.com/maps.
Once firmware has been updated, select Tune on the Accessport and then choose Restore OTS Maps as shown below.
Map files are available for cars using either 91 or 93 octane fuel. Stage 1 and Stage 1+BigSF map produces peak gains of +14% HP / +13% TQ over stock and maximum gains of +98% HP / +98%TQ over stock when using 93 octane fuel. Stage 2 and Stage2+BigSF produce peak gains of +19%HP / +40% TQ over stock and maximum gains of +110% HP / +110% TQ over stock when using 93 octane fuel. Due to the significant power drop observed at redline on the stock calibration, percent gains are drastically different than previously published. With OTS Maps carrying power out all of the way to redline, the differential at 6800 RPM is over 100% for both horsepower and torque. As you can see in the graphs below, this is obviously an extreme condition.
*For a complete explanation of each Off The Shelf Map for the 2015-2020 WRX 6MT, visit our Map Notes Page.
Cars utilizing a Stage1+BigSF or Stage2+BigSF map with the COBB Big SF Intake System can expect to see 10-12 HP in addition non-SF dyno charts seen above. Intakes are often accused of being simple noise makers and not making much of a difference in power, but that is not the case here! Replacing the factory intake with the COBB Big SF Intake greatly reduces pre-turbo restrictions, allowing the engine to be more efficient and make a bit more power. Interested in other mods? See our complete list of WRX aftermarket parts.
Please contact our support team with any questions