r/CivicSi

as you can tell from these pics, she is far from perfect but last weekend i put a new clutch, pressure plate, throw out bearing as well as a lightweight clutch.. should’ve done some research because i didn’t know it would start misfiring due to the lightweight flywheel. so i did some research found out i needed a flashpro or ktuner so I coincidentally found a deal on marketplace this morning for a ktuner. 18 years old with little mechanical knowledge very little tuning knowledge and did this all myself today. honestly pretty proud of myself although it was fairly easy and youtube helped a lot but everything is running good now. any tips with the ktuner is much appreciated:) 2012 civic si (9th gen)

Why buy an SI and heavily modify it when you can buy a type r if your planning on dumping the money into it why even waste the time ??? Don’t get wrong I had the 10th gen si bought it cpo in 2019 I thought it was a great car I did little bolt ons lowered it wheels but in the back of my head I always said I never wanted to go to far because then I should of just bought a type r. I see so and so many 11th gen’s extremely modify I wonder with the money you dumped into it why not just go with the type R. Just a question wanna hear someone’s reasoning from the other side not here to be hostile I Iove the SI.

Hey everyone,
A lot of users from my previous CarPlay post requested OBD2 support, so after a lot of work, the feature is finally live in Speedometer: Driving Tracker.

You can now see and analyze real-time OBD2 vehicle data directly from CarPlay, iPhone, iPad, Mac, and Apple Watch (via live activity).

One thing I personally found really interesting while testing was seeing how different driving styles affect engine behavior throughout an entire trip, not just live gauges while driving.

For example, things like:
• Engine Load
• RPM
• Throttle Position
• Coolant & Oil Temperature
• Fuel Usage
• Mass Air Flow
• Intake/Ambient Air Temperature
• And more

I added a sample trip summary screenshot below showing how the app now visualizes engine performance for a drive.

It even works with automatic trip recording through Shortcuts automations (when OBD2 device is connected), so trips can start recording automatically without manually opening the app.

One important note: every car exposes different OBD2 sensors, so some vehicles may not provide all data points shown in the screenshot.

The goal wasn’t just to make another OBD2 gauge app, but to make driving history and car data feel more visual, insightful, and actually enjoyable to revisit later.

Other existing features in the app:
• CarPlay trip tracking
• 3D route playback
• Speed-colored trip replay
• Video recording with speed + map overlays
• Fuel, maintenance, and expense tracking
• Vehicle-based analytics & comparisons
• iCloud sync across Apple devices
• Privacy-first experience (no ads/tracking/signups)

Now it’s becoming one of the most comprehensive driving tracker apps available on any platform, whether iOS or Android! (iOS version is live, Android version is in progress)

Would genuinely love feedback from fellow car enthusiasts on what data, analytics, or visualizations you’d like to see next.

Fullrace Exhaust

Skunk 2 Alpha Header

Some other bits...

I have a 2012 civic si which is FBO with an RBC. Tore it apart again to install, stage2 cams, 86lbs duel valve springs, type s oil pump, 72mm throttle body and a header. Hoping to make around 250-270WHP. Wanted to know whether a stage 1 clutch or even the OEM clutch would be enough to support this? I eventually plan to turbo it at well so would a stage 1 clutch support low boost on this setup?
I daily drive this car so was hoping to avoid a stage 2 clutch but if I have to I will.

I have a 2020 civic si and am about to be full bolt on with god mode tune from phearable. My clutch has already been slipping before putting in my catless downpipe so I have been looking for a clutch upgrade. The one I’ve seen recommended the most is the RV6 Type R Retrofit clutch with the Exedy clutch kit. I am wondering if I should get the Stage 0, 1, or 2. I am not planning to put a big turbo and flex fuel yet but I do not want to switch out the clutch later on if I do. What stage should I go with?

I bought it from my friend , fell in love with the vtec I FUCKING LOVE THIS CAR , she’s not perfect but still gets me there 😩

I did the brembo conversion on my 9th gen civic si so these types of brembo are plug and play so they just boot right up like oem

Not sure if anything will ever replace my red '14 baby but here goes nothing. 🍊 48k miles. She's fresh.

Side note, I don't remember the serpentine belt/area being so noisy/whiny on my previous Si? Should I be concerned?

Thanks gang 🤙