Hi guys, quick question. I got a 2012 Z, with ark catback system and just k&n cold air intakes, i would like to know what anyone reccomends for doing a tune on the car through ecu. Im not sure whats better, piggyback systems or new ecu chip or something if thats possible. Im not looking for crazy gains right now, but my end goal is the gtm tuner charger kit, and right now i dont want to pay an arm and a leg. Please let me know. Thx
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