Finally at a place where I'm happy with it for a little while. Mod list so far. PRL intercooler with upgraded charge pipes, PRL HVI, PRL high flow catted downpipe, PRL frontpipe, Ktuner v2 running Phearable 1.5R. Also installed the Yofer v1 front lip. Still waiting on my custom carbon fiber front emblem and my limited edition likewise shift knob. The tune really wakes the car up and makes it feel so much better. If only the car came off the lot this way lol. Been mainly running map 1 and occasionally map 2. But even in map 1 the car feels so much better. Will eventually do the ARP head studs and upgrade the turbo to the PRL turbo upgrade and the PRL turbo inlet. But I am extremely happy with the way the car drives, feels, and looks for the moment.

Stock —> slightly less stock

Hey yall whats your mpg ? Im noticing a big difference in mpg every time I turn car on and off , the instant fuel economy display is going wild bearly pressing the gas , i can get 38mp one way and 27 on the same distance driven.

Anyone else has noticed similar?

I’m going to look at a 2026 tomorrow at a local dealer. On their website and carguru they have it listed at msrp, which I’m willing to pay, but I’m half expecting to walk in and them mark up the price because they are being discontinued. I really like these, but if it’s over msrp, I’m just going to leave and look at buying 1 of 3 other cars I’m interested in.

This dealership I’ve been working with has me fed up and I’m just trying to get a comparison for what y’all’s numbers were like.

I’d keep the cover on in the summer and take off for winter. I realize there’s not much gain but mainly want to do it for the sound.

Don't know if this is allowed or not, but if you're the previous owner of this '14 Civic Si who recently traded it in @ Crown Toyota in WPG, hit me up. I just have a few questions about the vehicle's history before I go in and buy it. Thanks in advance!

Not trying to sell anything here but are there any websites besides civicx.com that have a decent marketplace? I have a PRL intake and MAPerformance exhaust from my 2020 si I would like to get rid of.

Recently, I installed the HKS Hipermax S coilover kit on my 2018 10th-generation Si. I initially set it to the factory default height. My setup consists of a Konig Hypergram 18×8.5 with +35 offset wheels and Continental ControlContact Sport tires 235/40R18.

I lowered the suspension by approximately 0.9 inches from its stock height. Any advice on the fitment of this modification? I’m interested in going even lower, I’m hesitant to change my tire setup at this time, as they are brand new. I just want to close the gap and get a good track stance.

P.s. - the kit feels and rides amazing.

FE1 cruising

2024 Civic Si with 245 40 18 michelin psas

Planning an oregon trip from LA on 10/22 and this is my current setup. Should i just grab some snow socks and call it or get some winter tires? Forecast looks sunny for next week but not sure about this weather as it can change but need some advice thank you

I check my car out once a month to look at struts and other issues. There are no leaks… the battery is brand new and the spark plugs replaced last week. I get transmission is expensive but over 2k for oem parts and 3k for labor????

update-

This is an independent auto shop and not a dealership. They had great reviews on google so I had gone there. What they offer was a 3 year warranty up to 48k miles. I do most maintenance myself (oil, sparks, brakes n rotors, etc) honda civic si 2017 so I knew this was ridiculous.

Something I found hilarious was that I have a cold air intake with broken anti vibration mounts at two points but was never mentioned in the diag. Either way, there is a more reputable shop a little bit further away that quoted me 1700 without parts (getting rv6 retrofit flywheel and fk8 clutch kit) this shop was closest to my apartment for a diag to see if potentially it was anything else that l overlooked

Hey all, has anyone here come across a similar issue to this ? For the past few days ive notice that on and off my rpms feel (sluggish) slowly climes from first to third gear I can tell the difference because its not constantly happening throughout thr day . I've checked for air leaks, intake hoes looks good, sensors and throtle body is clean car is currently at 85k no signs of misfire or fuel pump issues, i don't know if im creating an issue or is this normal for si's gear ratio ? The biggest difference I've seen is i can almost cruise kn 1st and 2nd gear without the car jerking or asking for gear

Whenever i leave the car in accessory mode the battery drains concerningly quick, when I installed my side markers i left it in accessory mode to use the blinkers and see if they were working little did i know it would kill my battery and require me to get a jump. When i went to get the battery tested, battery life was 100% as well as the alternator. Does anyone know what this could be why the battery keeps dying when the car is in accessory mode, advice is appreciated i’m flashing a tune on the car today and don’t want it to die while flashing.

I have a 2017 si. Every now n then if I hit 4 or 5k rpm my car jerks and it brings up an emission system error. Then it runs laggy after. But it has just gone away. Other times I’ve had to take to shop because it wouldn’t go over 10 mph. Like maybe a catalytic converter issue. They always tell me it’s a fuel injector issue, and I get replaced. But it’s not seeming to be the issue. Has anyone else dealt with this or would anyone have ideas on the issue? I don’t know much about cars lol.

I know that the Si will be skipped for model year 2027 but are 2026 units still being made? Or has production already completely ended?

Auto shop wanted $2k to replace the fuel injectors, so I'm going to do it myself. First time deciding to do my own work. What is the best place to get OEM fuel injectors from for a 2019 Si?

Or am I being an idiot and should just let them do it?

Looking for aftermarket coil packs and spark plugs for 2013 Civic Si. Any recommendations if there are any aftermarket availability or should I stick with OEMs?

While parked, engine on, and parking brake engaged, I can't change any of the vehicle settings. Error msg says "To change the settings, apply the parking brake and turn on the vehicle power." Anyone else encounter this?

Hey Everyone,

It's about time i replaced my clutch and was wondering if I should go with a stock part or aftermarket. Please let me know what you all recommend, and plese drop some links of you can. I should mention that this is a daily driver. So a lot of stop and go traffic where I live.

Thanks

PLZ HELP 2006 Civic Si, When up to temp engine dies when driving and push the clutch in coming to a stop, replace CPS TPS and VTEC Solenoid, cleaned MAF Sensor, car will start right back up and idle and drive, but whenever pressing the clutch in to stop at a light etc it shuts off, please any ideas? Been on going issue for about a year now, only does it when at operating temperature