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Asking $400 shipped to the lower 48. Just used it to check if my engine was misfiring.

Entire exhaust is around 4-5 parts. Rest of it is below this. You can see the other side of the exhuast below. All clamps and hardware needed included. This is going to be a local only sale. Asking $800 for it. Local Zip 92405 but willing to meet anywhere around 50mi if needed...

Asking $300 BNIB. Never used. Product link for reference: https://afepower.com/afe-power-77-46601-scorcher-gt-module

Asking $30 shipped

Pictues will be posted later today if I get the chance. Ktuner V2 - $450 shipped Comes with TSP stage 1 (race and street maf) & 1+ (street maf) for 2019 civic si. If you need to convert either of these tunes to a different year si please let me know. File conversion is only available to the...

Looking for a hondata carb

I've never really heard of Ktuner being involved in 25 hour races or seen anyone tracking their car. For the most part I've always seen Hondata. Does it really matter what you use? From reading on here the general consensus seems to be ktuner for daily driving and hondata for tracking. I'm sure...

Just flashed Hondata +6 basemap with throttle response and sens at 3 and my idle would climb to 2.5k RPM as if I was pressing the gas when i was in neutral. Reflashed it with response and sens at 1 and same thing. Only thing time it would surge up and down from 1k rpm to 1.5k over and over as if...

https://www.twostepperformance.com/products/tsp-r365-tune-for-the-2017-2018-2019-and-2020-honda-civic-si

Brand new Mishimoto Intercooler - $450 Intercooler piping - SOLD This is brand new never used. Only time I took it out was to stencil the M. Type R shifter + hybrid base bushing/shift linkage bushings -SOLD located in 92405

INSTAGRAM LINK

Anyone have a ~22lb Clutch/flywheel on the stock tune? Curious if it removes some rev hang at all or gave you a CEL for being too light.

Anyone have any issues with the law running a cobra intake or any intake that isn’t mishimoto since that seems to be the only one that’s CARB legal here in California?

$500 local 92405 Came off a 2019 civic si Comes with tsp stage 1, 1+, and phearable 1.5R for 2019 civic si

Anyone know if you have to take your lease to a dealership to buy it out even if I want to go through my credit union? I saw an option on Honda financial for a lease buyout quote and was wondering if I could avoid the dealer in general and just buy my car by mailing in a check via my credit...

Recently checked my intake filter to see if it was dirty and noticed a thick build up of burnt oil around my valve cover gasket. Took it into my local Honda dealer, they said it was “the first they’ve seen that happen to an Si.” They say to leave it because they have to run compression tests to...

Local to Inland Empire, 92335. $650

$700 local only im in the 92405 and willing to meet within an hour of my area. pics will come on monday when i remove it. Just trying to find a buyer by then.

https://www.phearable.net/blog/stage1.5-nonsi-11thgen.html