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@OP
I'd recommend the JB4. Had a Racechip GTS Black and it kept throwing Drivetrain faults during hot weather and spirited drives. Biggest downside about the Racechip is that it blindly adds boost to the car without understanding the current parameters of the car.
JB4 is piped into your OBD data and hence, serves as a means to protect the powertrain if necessary/prevent errors like the one above. I currently am using a JB4
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