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  1. Problems after Stage 1

    ECU Tuning & Performance Electronics
    So I have a 2019 STI, I recently bought a cobb accessport i was already running an ETS catback and a GFB bov. I know i should be running that but i’ve been running that set up with a tune for about 8 months and have had no problems but last week i got a cobb access port and went stage 1. I was...
  2. Getting some Feedback knock and Fine Knock learn, Is there something I should worry about?

    ECU Tuning & Performance Electronics
    i was driving sprightly through some back roads and seeing some knock numbers. I am on the Cobb stage1 ACN 91 map using 91 gas in CA. i am getting 1.4 Feedback knock just for everyday driving and one day I had a 2.45 on Fine Knock learn. Is this not normal or I am just being paranoid. 2017sti...
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