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  1. Cometic Honda L15CA Head gasket

    If it has vtec, this is the one to get.
  2. OEM Spark Plug Part Number?

    I always install them without gapping. Never had any issues. Before inflation, plugs were much cheaper, so i used to put in new plugs in my 10th Gen every year.
  3. Head gasket warranty extension?

    Si's L15ca is literally same engine in the accord. Who knows. Time will tell.
  4. Clutch helper spring delete

    You need to adjust the pedal. Your pedal is clicking because the master cylinder pushrod is too short or the stopper bolt is not touching the pad on the pedal. When you let go, it should feel nice and plush without annoying clicking.
  5. Clutch helper spring delete

    Thats for 10th gen. 11th gen service manual lists different values. 212.4mm pedal height and ~2 to ~9mm free play. there is a cutout on the carpet with metal hump underneath. I've tried playing with free play, but neutral position with no preload feels the best to me. 2mm freeplay puts too much...
  6. Clutch delay valve delete analysis and how-to

    Installed damper delete on my si. Disengagement definitely seems quicker and consistent. Every little bit helps, because of rev hang. With the damper, sometimes it would take longer to disengage. Maybe it's in my head, maybe it's real, but I can shift faster and more precise. I flashed back to...
  7. Head Gasket Warranty Extension NHTSA TSB

    Older hondas were much simpler cars. Elantra n is more high strung than the si. Im not sure if it will last 10+ yrs without major overhaul. Headgasket job isnt the end of the world. I find the si very diy friendly. You can call it survivorship bias, but I had close to 150k miles on 10th Gen with...
  8. Head gasket warranty extension?

    How do you guys check if the ecu's been reflashed? 😅
  9. Head gasket warranty extension?

    Type r head gasket is just as flimsy, and there's only a sliver of material separating the cylinders. 2.0l piston diameter and thicker headbolts probably help hold it together better. Fk8 and 2.0t accords do suffer to some extent.
  10. Head gasket warranty extension?

    It's official.
  11. Loose subframe to chassis bolts

    From the service manual Front subframe bolts Use new bolts 103 N·m (76 lbf·ft) Front subframe member extension bolts (12 mm) Use new bolts 60 N·m (44 lbf·ft) Front subframe member extension bolts (14 mm) Use new bolts 103 N·m (76 lbf·ft) Front subframe rear stay bolt (front) Use new bolt 95 N·m...
  12. The Tuned 11th gen Experience & Reliability Thread (for all models)

    Bruh. You need to chill. Im just documenting my experiences. Why are you getting your panties in a bunch? So emotional.
  13. MY2027 Paused for Civic Si

    Its amazing how strongly people identify with metal boxes on wheels. These companies don't care about you as much.
  14. The Tuned 11th gen Experience & Reliability Thread (for all models)

    I did some test driving with early spool off. I like it. Throttle is not as sensitive, but it revs out stronger up top. With early spool, 1st and 2nd gear were kind of useless as it would break traction, and run out of steam quickly, but without early spool, first 2 gears feel longer(if it...
  15. The Tuned 11th gen Experience & Reliability Thread (for all models)

    Ive been running early spool since day 1. Didnt hear anything about it when i emailed them. Im going to reflash tonight and see how it runs without early spool. Did he say why they dont reccomend it? Even with early spool, it doesnt feel super punchy down low.
  16. MY2027 Paused for Civic Si

    My next car will be a type r, so it's ok.
  17. MY2027 Paused for Civic Si

    12th Gen civic due in 2027? I'm not surprised after the prototype reveal.
  18. The Tuned 11th gen Experience & Reliability Thread (for all models)

    Vehicle: 2025 Civic Si Tuned miles driven: 15k miles Tuning device(s) used: KTuner V2 Tunes used: phearable 1.5r Fuel used: bp 93 octane Additional related mods: PRL Stage 1 intake prl intercooler/charge pipes Problems/issues: None Driving style: nothing crazy. Tuning experience notes...
  19. Rev Hang - deep dive

    Have you adjusted your clutch pedal? After installing wunderladen racing clutch pedal bushing, i adjusted my pedal per hondas instruction. It surprisingly made a big difference in shift feel, and although Rev hang shouldn't be affected by it, I can shift much quicker and smoother. Im running...
  20. Decided to buy Si

    Meh. Si was never meant to be for clout chasers. With some minor tweaks, its a fun reliable daily driver. It's comical how much hate this car gets. Parts are relatively cheap, and it's easy to diy. I'm running mine til the wheels fall off.




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