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  1. Illinois Sold: PART OUT (PRL CAI, FMIC, FP, CP, KTunerV2, Acuity bits, Wheels, Brakes, Tail Lights, & more)

    i'm selling my Si and i'll be reverting to stock. If anyone is actually interested in buying my black 2020 Si for $30k OBO, PM me and we can do that as well. prices are obo of course Located in NW suburbs of Chicago, will drive up to 100 miles to meet up. local pickup, buyer covers shipping...
  2. Flex pipe broken @ 20k miles?!?!

    Recently i've been hearing a rattle/buzz from the exhaust on decel at low speeds, i.e at a drive thru. I initially thought it was the middle clamp of my ARK DT-S exhaust, but i got it on a rack today and through some percussive investigation it was found that the flex pipe is seemingly broken...
  3. Engine stutter on cold start?

    TLDR: car stutters on cold start, need help with diagnosis What's up everyone, I seem to be having a new issue that i can't find any related discussion to. Recently my Si has started to intermittently stutter on a cold start. It stutters very briefly, for only a few seconds or so, and then...
  4. Any last minute clutch opinions? Ordering soon

    My clutch is slipping consistently in gears 3+, slips in 2nd on map 3 if i'm doing a pull (phearable 1.5). Map 1 i even slip in late 3rd early 4th. I'm ordering a new clutch in the next week, and i'm asking for any words of advice; bad experiences, things to note, things like that. since the...
  5. Driver side hyper flash on aftermarket tail lights

    I just installed new tail lights an it hyper flashes on the driver side only. Front & rear. I have a 2020 Si so it has the led headlights and signals and i haven't done anything to mess with those. I understand a load resistor is what is used to prevent hyper flash, but i'm not sure how i would...
  6. Help needed for new wheel fitment!

    I’m getting a set of aodhan ds06 wheels 18x9.5 +30 and a set of michelin ps4s tires 255/35 (or 245/40 if the others won’t work). I’m going to lower the car, either on d2 or truhart springs, as well as get spc camber arms for the 2” drop. My question is which spring i should choose and why. It...
  7. Is a charge pipe upgrade worth it?

    I'm in the process of generating my list of parts to order, and i can't seem to reason why a $300 charge pipe upgrade would be worth it. upgrading the IC so deter heat soak for longer as well as improve cooling capability all makes sense to me, but is upgrading the charge pipes worth it? it...
  8. Si Whistle/whine under WOT?

    I've been hearing this whistle when under WOT at 4900 rpm and up. I have a video and can attach it if that would help. The whistle sounds to be around 1000Hz range, and I can't tell where it's coming from, but I do know for sure that it's not related to speed; i.e maybe a window that's slightly...
  9. Custom switch in place of blank plates

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  10. Whiteline aftermarket end links too long?

    I bought the Whiteline grip kit with the front and rear sway bars + end links, rsb install was pretty easy, only had to lift the car a little bit because of how much beefier the new rsb was compared to oem. Only problem is that the new end links clunk constantly over every bump. All nuts and...


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