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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. Why I traded in my Civic X Si

    So question for the OP (and yes i realize this post is a couple years old). It seemed like you traded up to the type R - how has that been. I have an SI tuned with tsp stage 1 and prl cobra cai (street maf). I like it but I kinda want to make the jump. Mostly for the extra hp and handling...
  3. Feature You Didn't Expect to Love?

    These two things for me are the things I notice the most when I drive another car without them. Like in the wife's van when I change lanes I always find myself looking at the infotainment screen for that right side camera image and it's not there. Same with touch unlock/walk away lock. I...
  4. What type of oil does everyone use?

    So maybe I'm cheap but Costco has a Kirkland brand full synthetic oil made by a national company (Waren or Warner I think). You can get 10 quarts for just over 20 bucks when it's on sale. I use the weight the manual recommends - 0W-20. I'm still scared about changing the filter every other...
  5. How many miles are you getting per tank and what MPG?

    What year civic: 2018 Civic Si Average MPG: 31-36 mpg Mostly highway/city/mixed: 50/50 Which octane gas do you use: 91 (highest they sell in Utah) Engine Modifications: PRL CAI (street maf) Kutner + TSP stage 1 Tune Driving Habit: MIx of spirited and conservative driving. If I leave it on...
  6. looking for an intake anyone selling ?

    I have an Injen CAI for a 2018 Si. I believe it is works for all 10th gen Si's but not the other trims.
  7. California WTB: CAI for civic SI

    I have an injen CAI that was on the my '18 Si when I bought it. I replaced it so I no longer need it.
  8. My anti theft option

    :eek::eek::eek: Wow. Didn't know those existed. Kinda scary. This discussion reminds me of my 7th Gen Civic HX I had when I first got married in '02. Bought it from a guy in the LA area. A year later my mechanic was doing some work on it and when he was done it wouldn't turn on. Starter...
  9. Got a Reality Check Today

    Yeah but you crushed him at the gas pump though. :headbang: All kidding aside, yes we have to realize this is not a race car. Or even a high-performance sports car. I will say though - This car is an incredible feat of engineering. A car that goes relatively fast with amazing handling and...
  10. Ktuner for sale

    Great Seller - thanks for the tracking info and quick shipment! got the KTuner hooked up and the TSP Stage 1 tune flashed to the car. All works as it should. Thanks again!
  11. *chirp chirp* Am I the only one in Utah?!

    This seems to have turned into the unofficial Utah welcome thread. :D Anyhow this is my 6th Honda and by far my favorite. Had 98 Civic Hx, 00 Accord Ex, 04 Civic EX, 13 Civic Ex-L, 12 Honda Oddysey Ex-L (for the wife) and as of about 2 months ago my 2018 Civic Si (4dr). Still own the last 3...
  12. What’s your most loved/hated thing about your Si?

    On the bright side it seems like there is far more head room with which to upgrade/modify without hitting the reliability ceiling (obviously there are those who push to the limit and pay the price with a blown motor but the limit on the 10th gen seems farther than previous generations)
  13. What’s your most loved/hated thing about your Si?

    Agreed on all counts. I couldn't believe after some spirited driving and in-town driving my mpg was still 32! The handling though... I've owned 3 other civics and an accord but never an Si and the handling is amazing. Also don't love the fabric throughout - Si is on the higher end of the...
  14. PRL Cobra CAI MAF upgrade Question

    What you said at the end kinda clicked. When you can spread the R&D over tens of thousands of products its lowers the per unit cost. I don't have any idea how many of these PRL sells, but it is definitely far fewer than honda sells so they have fewer units over which they can spread those R&D...
  15. PRL Cobra CAI MAF upgrade Question

    That sounds like work. ;) FR though that's actually not a bad idea. I mean, I did like the idea of owning both just to allow me to revert to stock-ish if I wanted. But yeah, in the end only being out $75 for the upgrade isn't bad. That's a great workaround and thanks for the suggestion but...
  16. What’s your most loved/hated thing about your Si?

    Favorite thing about my Si is that I live about a half mile from the mouth of a 7 mile canyon road. When I see the yellow signs warning of an approaching turn with the suggested 45mph speed and I punch it in fourth gear and hit 80 through the turn - It's the best feeling. I'm literally getting...
  17. 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...
  18. Ktuner for sale

    PM'd
  19. *For Sale* Ktuner V1.2

    Take Venmo?
  20. Stock Intake Interchangeability between '17 and '18

    Yeah so the "wife" star and the "funds" star finally alligned and I ended up just getting the PRL Cobra cai (only had a few days but I love it). Ended up not going to stock but I did discover that they are in fact interchangeable in case anyone was wondering for future reference.

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