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- Thu Oct 18, 2018 3:27 pm
- Forum: Civic Si 2012-2015 US/Canadian / 2013+ ILX
- Topic: tune problem???
- Replies: 6
- Views: 1676
kcl489: I have the same problem with my 2015 Si. I have a tune with Vit and no other mods. I had the tune running on my car for three straight months. Initially, it felt great when I first flashed it. Three months later, I had noticed that the power really felt down. Reset the ECU to stock, and now ...