civic si

For 2016-2021 civic si/sport Mishimoto intercooler $450 Prl short ram intake $150 Maperformance downpipe $450 Ktuner v2 (unlocked) $450 Take everything for $1200 located in southwest Suburbs of Chicago for local pickup. Will ship the ktuner if you pay shipping cost. Text 630-362-5935 if you’re...

Hello All, I have a pair of new drilled & slotted rotors for sale. Rears rotors only, and only for Si models. They are the premium rotors with black zinc coating from brakeperformance.com - part# CBR-40097 (I used the ceramic pads from this kit separately.) $85 + shipping No Paypal, but I...

Looking to buy or trade some oem parts Looking for stock si suspension( will buy or if you throw me $500 we can trade for Ktuned Coilovers only used for 10k miles). OEM DP ( will buy or trade for PRL catless dp and you add $250) Oem air intake ( Will buy or trade PRL short ram intake race maf...

Hello , a few of my buddies have been advising me to put an oil cooler on my 2019 civic si and I wanted to ask youguys if it’s necessary since my only mods are CAI, intercooler and ktuner tsp1 , and I’m not really planning to add any more mods beside a clutch if it slips. Thank you !

Selling brand new Hasport L15B7 (2017-2021 Civic Si) replacement motor mount kit with 62A (Street) durometer. This includes left,right, and rear engine mounts and all necessary hardware for a complete install. $450 $350 shipped.

I have a 2020 Si and I want to do a turbo upgrade to try to push around 300 whp and torque. I have everything I would need to lead up to it like dp, tune, intercooler, etc. And I am planning on getting a clutch before the turbo(emans Type R retrofit). My main worry/problem is that I daily this...

I found this just browsing the used car market and i came across this car. It look like its full bolt ons + flex fuel. Does anyone know who it belonged to?

Hello i bought a used 2019 si about 5 months ago and leaning to get a ktuner pherable 1.5 but I was wondering if I can run it on 91 octane since I’ve been reading most people use 93 but we don’t have that in socal and am scared of knock :( someone mentioned that hondata makes tunes for 91 idk...

I sold my 2019 Civic SI. The Ktuner is unlocked and I will also send you the TSP tune that I have. If you have any questions let me know.

I was wondering if it is possible for me to be getting 10 - 11L/100km with almost all city driving in a 2017 si? Most of my trips are 10-15 minutes in relatively normal traffic and I shift pretty conseratively at 3k. I'll only ever go on the highway once per fill-up which brings it down to 10...

Hey civic family! I’m currently selling my brand new in box PRL cold air intake (street maf) . I had purchased this for my 2020 Si, but didn’t get the chance to install it before trading in my Si for the CTR. I can’t return it to Maperformance since the return period had long passed. This part...

I have a set of OEM springs from my 2020 Si before I went with aftermarket suspension for sale. They were only used for about 6k miles. Local picking in Champaign/Urbana Illinois or shipping at buyers cost. I will post pictures of them here in a bit, please DM or add to this thread if you are...

Hey guys so I just receieved my RV6 Catted DP & FP for my 10th gen si and cant really find any good install instructions does anyone have a link to one? Thanks!

Hey guys what tire fitment would work well with 18x8 for my 2016 Civic coupe LX-P I want a flush look with a little wheel gap.

about to buy a wheel and tire set from a friend and i want to see if 235 45 18 tires would fit without fender rub. please lmk ASAP

Help!! I have a 2017 Honda Civic SI with 31k Miles. I have the same issue when driving the car hard I will get the same error codes and the turbo stopps building pressure. The error codes seem to not be true all functions of error codes are normal and says nothing about turbo not working. I have...

Hello, I have recently sold my 17 Si :( and now have an unlocked Ktuner 1.2 which I no longer need. It is still in great condition with no issues. I am only asking $250

hello , I recently upgraded to a 2019 civic si that had a greddy cat back when I made the purchase and it sounds nice , I sometimes get the burble/crackles very low but I’m curious if that is coming from a tune or just because it doesn’t have a muffler ? And how can I know if it is already tuned...

2018 Honda Civic si limited slip differential. Came out of my original trans that had a weird failure and the case cracked. This could be an upgrade for a base model car or anyone that needs one. Unsure what the value is. $300 to start. Buyer pays shipping. I can provide more photos via DM or...

Hello everyone, this is my first post. I have a 2017 Honda Civic Si Coupe, with 50k miles. On my Ktuner V2, it’ve noticed my Short term fuel trims(STFT) usually range between -16% to 4%. My Long Term Fuel trims (LTFT) currently sitting at -14% to -10%. I am in college right now, and my driving...