Complete Split Second and R4 Software Guide | Focus ST and Mazdaspeed Aux Fuel

Previously on Edge Autosport: We went over all the details about Aux fuel vs high pressure setups on your Focus ST or Mazdaspeed builds. Today, we are going over the brains of the operation: The Split Second controller and R4 software that manages your aux fuel port injection tunes.
This standalone ECU is required to run port injection on your car and unlock maximum power from you big turbo setup! Learn how to set up, load maps, and troubleshoot the process when E-Tuning and using the R4 software that is included with a Split Second controller.
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Getting tuned is easy! Just head over to the site and purchase an E-Tune to get started: https://bit.ly/edge-etunes

Shop Split Second Aux Fuel Controller: https://bit.ly/Split-Second-4Injector
Or the Whole Kit with a Stratified X4trafuel System: https://bit.ly/Stratified-AuxFuel
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