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Good Morning Y'all. I just wanted to start off by saying; The CivicX Community has been, by far, one of the best communities I've ever been a part of. So many friendly people and so many willing to help and give information. In July 2018, I bought my Brand New 2018 Civic Si Coupe with 5 miles...

Looking to sell my FlexFuel Kit that came off my 2018 Civic Si. Works beautifully and is available for shipping (at buyer's expense) and/or local pickup in Ontario, California. Asking $200.

Hey All! I'm selling my KTuner v1.2 from my 2018 Civic Si and all the tunes associated with the KTuner Serial #. I'm looking for $600 OBO. Located near Ontario, California.

I have a complete set of lightly used DI Fuel Injectors that came off of my 2018 Si Coupe at around 8K miles. The injectors are clean, tested and working with zero issues. They work for any 10th Gen Civic with the 1.5T (L15). Honda Part#: 16010-5PA-305 Looking for $200 for the set. Willing to...

Hey guys, I'm curious to see if anyone can lead me in right direction to continue diagnosing the issue with my 2018 Civic Si Coupe. The specs are as follows: PRL Cobra CAI w/Race MAF PRL Catless Downpipe PRL Frontpipe KTuner Flex-Fuel Kit E40 Fuel Blend (91 Oct & E85) KTuner v1.2 TSP Stage 2...

Hey all, I wanted to get your opinion on an issue I've been having regarding my Si that I believe is injector related. Here's a quick recap of what she's got performance-wise: KTuner v1.2 TSP Stage 2 Tune KTuner Flex-Fuel Kit PRL Cat-Less FP & DP PRL Cobra CAI w/Race MAF Chevron 91 & E85 Blend...

This thread is for all to share their Time Attack Videos. This last Friday, I had the opportunity to hop onto Big Willow at WSIR in my Daily Si. The car was able to lay down a 1:47:01 before the track got too hot. Overall, the car handled very well and I had a ton of fun!

Dear fellow 10th Gen Coupe owners, As you all know, our doors are longer than the Titanic and just as heavy. If Seibon were to offer a CF door, would you be interested in a set? I'm trying to a count to show themt how many people would want them. Thanks!

Just posting this here for more exposure. Hope to see some of you there! :thumbsup:

Does anyone have or know what this button under the dash is and/or does? I've been looking around and haven't found an answer. It does not appear to be OEM and may be something my dealer installed as there's another screw-hole next to it (which I'm not happy about).

PREFACE Alright, so I'm going to be clear up-front and say that I have not tested or felt any other clutches available for the 10th Gen outside of the OEM stock clutch. I do not have the hands-on experience with others to compare my thoughts on other clutches available. So I will be comparing...

I know many of us here use E85 and for a lot of us, Propel stations are the most common. Anyone that uses it knows that Propel has 2 options at the pump; E85 and Diesel. Just a friendly reminder, always double check to make sure what fuel type you're pumping into your vehicle. Apparently...

$1,400. Not bad! $400 for just the ADS module.