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the S and M modes will put the fun into your transmission
however is designed to work will all factory emissions systems such as Catalytic Converter and GPF
improves stability
the engine protection systems would limit power further due to the temperatures being too high even on the road
Following on from the success of the MK3 Focus ST
STG 1 to STG 1+ Handset Software Upgrade Model-Z4 M40i G29 B58 the S and M modesUpgrade your handset from STG1 to STG1+ tuning on MK8 ST There's no need to pay full price again to upgrade your STG1 software to STG1+ software, from just 175+VAT we will upgrade your software, including appropriate software changes for additional hardware such as Sports Cats, Upgraded Full Exhaust system, Full Intake System.
