2017 civic si

Hey y'all. Things have been going swell with my Si so far. But I ran into an issues last night. No check engine light, but my car is only hitting about 10 lbs of boost at most. I am on the ktuner 21psi starter tune. Mods are my PRL Cobra and PRL Catted DP. I am getting a more raspy sound from up...

I was wondering if it's normal to get 10-11L/100km on average in a 2017 civic si? I drive in the city often 5-10 minute trips with little/normal amounts of traffic. I'm often seeing other people getting 5-7l/100km which is insane compared to what I get. On a full fillup, the display shows around...

Basically been running k tuner(19/23) since last december and got tsp stage 1 in june and also installed a MAP cai. I run the car like a maniac and always run it on map 3 pretty much. My car is a 2017 si with 74000 miles. I commute far to school and work usually 80 - 100 miles a day on the...

What's up everyone? First off, if you're interested in our FC3 project, make sure you subscribe and follow us! We'll also be posting a lot on IG so follow us there as well. Links are in signature! We'll be posting everything we do on the forum too so you can get updates here. It's been a while...

This thread has been a long time coming. It's taken allot of hard work to get here and I'm super impressed with the results Big shout out to Derek for all the hard work he did and making this possible. A big thanks to Cory at 2 Step Performance for the goodies, and also answering my...

long story short i cracked my upper grill on my civic si, but cant find a oem si upper grill anyone know where i can get one.

Hey guys, I'm looking to wire in a fuse tap to my fuse box but I can't seem to find what the correct fuse size is anywhere. It seems to look like a mini low profile fuse but I want to be sure before ordering the fuse tap. I was looking to order one of these fuse taps: Uriveusa 12V Car...

Show me under your hood!!!

So I did some forum searching and it seems most people were installing the Chinese/Taiwanese Market crystal clear markers with some modifications to make the North American bulb housings work. I was not happy with the crystal clear markers personally as I prefer a white reflector type "clear"...

When do you guys recommend I should do the first oil change for the new Civic Si? The dealership told me that I should come back at 1,000 miles for a change since initial oil in the engine contains a "break-in additive" . and should be changed at 1,000 miles. I can't find anything about this in...

I kept an ownership thread in the Mazdaspeed forums that was fairly popular. Thought I would create one here too - especially knowing that this is Honda's first foray into Turbo Direct Injection. Hopefully it proves useful to those considering this car later down the line, new or used...

IMPORTANT: The Race FlashPro (tested here) is not designed for public highway or street use, and is only legal for formally sanctioned race use on a racing vehicle that may never be used on a public highway or street. Here's a driving impressions review we recently did of our 10th Gen Si at a...

Since all the other states outside of California have higher octane fuel, I decided to put E85 and a custom tune on my FlashPro. Driving the car felt great (then again who doesn't love E85)! However, to show results will have to wait until we put it on a dyno (although we know fuel plays an...

IMPORTANT: This product is not designed for public highway or street use, and is only legal for formally sanctioned race use on a racing vehicle that may never be used on a public highway or street. Hondata just released a video explaining the new Civic Si FlashPro and the power gains using...

Hey everyone, I just received my Boomba BOV in the mail today and installed it on my 17 Si. (Which was definitely a pain.) But nonetheless, it's on now. It sounds pretty decent but at the same time it doesn't really sound the "PSSHH" in their video. It's more of a "KAA-PSHH" if that makes...

Hi everyone, I've been doing some searching and have to yet find any reviews or people with an upgraded exhaust on the new Si. I'm looking at my options as far as getting a few extra horses on the new Si. Thanks in advance!

Just picked up our red 2017 Civic Si sedan this weekend! Very impressed with all the little details Honda put into this Si model to make it different than the standard EXT. We'll be doing a full review on all the differences and driving impressions soon. We'll also be setting up a back to back...

I originally never planned to get the SI as I wanted the hatch. When the dealer informed me the hatch sport 6 speed had a few month waiting list I went for a black SI sedan that was being unloaded from the truck as we spoke. overall ride is nice. 1st gear pulls seemed a little sluggish and...

There is no information on this. Ive seen it called a 1.5 turbo vtec, but idk. Im frustraded as most with this lack of available information. Also a new tread from road and track says the si will debut at the new York international auto show. Yet i cannot find anywhere else that confirms it. Can...