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  1. California Sold: 2020 type r shifter assy

    Have a 2020 type r shifter assy with acuity bushings for $100 OBO and a Aciuty shift knob $65 was on my vehicle for 3months imo throw reduction is about 25% from the Si
  2. California 10th gen civic SI partout

    Hello CivicX community sadly I am getting rid of my 19 si coupe that treated me so well for the year that I owned it. Below are all the parts I am getting rid of DM for best response time! PRL Intake Street MAF (not the short ram)-$330-SOLD Ktuner v1.2 unlocked-$300-SOLD PLM catless...
  3. Greddy Intercooler

    Hello everyone been looking for more information on the Greddy intercooler for the Si. Looking to do e85 and looking at my intercooler options and greddy seems the most reasonable but I’m also trying to look for a used Prl Mishimoto or 27won so LMK! Thank you
  4. California Type r shift knob 2016-2019

    Honda Civic Type r shift knob 2016-2019 model Ball type used for 10k miles bought off another user on here looking for 70$ shipping on you located NorCal
  5. Brake fluid

    Hey guys I know there a few threads on brake fluid just wanted to see what everyone runs for spirited daily driving and track use. Was thinking of going with Motul 5.1 has anyone run this?
  6. California 2019 Si shifter assy

    Heya got a 2019 civic si 10000 miles on this stock shifter assy looking for 80$ you pay shipping located in NorCal
  7. Another Intercooler thread

    Hey all been wanting to do a fmic but have mixed feelings from what I’ve read some people say not to waste your money on a full fmic kit if you are staying stock turbo witch I am interested to see what people think about this. My goal is to have e85 with fbo. Looking for the best budget build...
  8. Stock si muffler pickup Bay Area

    Hey all have a stock civic si exhaust that was on my car for 500miles asking $300 obo local pickup only
  9. E85 questions

    Hey guys I would like to run e85 but I have a few noob questions. Right now I have a Prl long ram with street maf intake, plm downpipe/frontpipe, Ktuner v.1. From what I’ve been told for you to see your ethanol content you have to either have Honda hack or Ktuner v2 with screen and to run...
  10. 10th gen civic type r shifter

    Hey SI owners was wondering if anyone has installed a Oem Type R shifter in an Si. I work for an automotive repair shop and the shifter is super cheap but I’ve heard mixed things about it some people say way worth the money 25-30% shorter throw others say not worth. Also if installed did you...
  11. Spark Plug Replacement 10th gen SI

    Hello fellow Civic si owners, Alright let’s get right into it I’m looking to do plugs on my Si this next oil change I’m pretty anal about maintaining my car so I’m going to do plugs at 15-16k miles. I work for an automotive repair shop and was going to use my discount to get plugs but even with...
  12. 2019 stock SI exhaust

    Have a 2019 Civic Si stock exhaust for sale PICKUP ONLY located in NorCal looking for $350 obo. Instagram GlahdoSi for faster response. 500miles
  13. Volk TE37s 17x9 coupe SI

    Hello been trying to hunt down a photo of a coupe si on some OG TE37s I see most with a +22 offset running small tires. I would like to be able to run a 255 anyone have a photo of a 17x9 +40 TE37 with meaty tires on a SI and could you run that offset without looking funny.
  14. Two obd2 ports?

    Hello civic si owners So I was moving my car at work and noticed some wires hanging near the clutch so I did some investigating and it looked like the dealer installed some sort of obd2 port anyone else have this and if so what is it for? Located in Cali
  15. Safe Civic si whp/torque numbers

    Hello fellow Civic X owners I was searching around the forums about safe horsepower/torque you can get out of these 10th gens. Would 300+hp/torque be something to crazy for a daily? Reading up on all these posts about blown motors is making me nervous
  16. Hondata vs Ktuner

    Hello fellow Si owners Was wondering what people are running Hondata or Ktuner I know both are very good just stuck between the two
  17. Civic si 18x8 stock wheel with 245/40/18 will it rub?

    Hello was wondering if anyone has put a 245/40/18 on the stock si wheel and if so does it rub?
  18. Best engine oil SI

    Hey guys been searching around trying to find the best Synthetic Oil to use for my first oil change on my 2019 Si. Here are a few choices that are popular among fellow Si owners. I know I am missing a lot but feel free to share your thoughts!


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