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  1. Best Brake Fluid for Si

    Been searching and can't find what I'm looking for. Obviously the manual tells me genuine Honda Heavy Duty Dot-3 fluid. I've read about Bosch fluid being really good as well as Motul 5.1. I don't track this car but I have a K-Tuner with TSP Stage 1 and a PRL Cobra CAI. Spirited driving is my...
  2. PRL Cobra CAI MAF upgrade Question

    So I know there has been a lot said about the PRL Cobra CAI. I've searched but haven't seen anything about this. Maybe PRL can chime in. So I purchased a PRL Cobra CAI street maf version a few months back. My car came with an Injen and I wanted to avoid long term damage to my car so I...
  3. Stock Intake Interchangeability between '17 and '18

    So I posted a week or so ago about the Injen CAI that my car came with. I am wanting to go back to stock for now and a user on this forum offered me one for a reasonable price but it's from a 2017 Si and I have a 2018 Si. His is coupe mine is sedan (if that even makes a difference idk), I was...
  4. New Si Owner - Need help

    Okay so first post (been stalking a while though). I just purchased my first Si. I've owned 3 other civics and an accord (currently own a 2013 EX-L). It's a 2019 and the guy I bought it from put an Injen CAI. Sounds good but from what I"ve read on here it can mess things up (don't really...


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