How long have you been on the OFT tune? I'm thinking about it for my STX build as a stepping stone. The OFT first, then adding headers later after I get the suspension sorted and main money dump there.
I've run a Cobb 'stage 2' OTS tune on my WRX for years doing autocross. Worked fine. Might not have been the most power, but got the job done as the tunes usually run a hair rich to suit a variety of cars/climates, etc.
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2017 BRZ Limited Performance Pack - Steel Cities Region SCCA / North Hills Sports Car Club
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