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  1. J

    Apex Wheels for CT4-V Blackwing

    Hey Andy, I saw that the recommended rear size was 10". Can you provide photos of your rear tire fitment? The 275 rear tire isn't too stretched to fit the extra 0.5" is it? Curious how th OEM tires fit or if I would need to upsize to a 285. Curious because the motorsport gold color is only...
  2. J

    What did you do to your Blackwing today?

    Very curious about your results as I also live in California with crummy 91 octane. Thinking about doing a Cam and eventually Group B unlock for a Blended E tune. Are you able to get any 60-130 times on your Gas tune for reference?
  3. J

    CT4-V Blackwing...kind of slow

    I've only done east with the the Blackwing. It handles well for it's size so it should do ok on west. West is a lot like Buttonwillow where you have to rely a lot on momentum. Either way, no matter how good you are in the caddy, you'll always have someone in a S2000 or Miata pass you up on those...
  4. J

    CT4-V Blackwing...kind of slow

    I'm in the same boat. I have tracked my Blackwing three times already, once at Buttonwillow and twice at Thunderhill here in Cali. All three times I had my JB4 essentially turned off. I feel like the stock power is more than enough for track and didn't want to run into timing/heat issues with...
  5. J

    CT4-V Blackwing...kind of slow

    Depending on gas quality you can get close. Eventually when my warranty is up I'll move over to a full ECU Tune. For right now the JB4 suits my needs because I can remove the module before any dealer check in.
  6. J

    CT4-V Blackwing...kind of slow

    I had a 2018 ZL1 1LE and I totally forgot about the bogging it would do. Got rid of it after a year of tracking it and unable to tolerate the stiff suspension on the street. Not to mention that those Goodyear Supercar 3R tires are hard as a rock when they have no heat in them. I managed to get...
  7. J

    CT4-V Blackwing...kind of slow

    I did a 12s quarter mile on my CT4 BW 6sp Manual last night on a crappy old back road. Just spend the $600 for a JB4 or go crazy on a Full Unlocked Tune to get it to your liking. For me bringing it up to ~490-500 whp (stock M3 levels) is the sweet spot for this car.
  8. J

    Apex Wheels for CT4-V Blackwing

    I'm here waiting for photos of people's wheels mounted on their cars!
  9. J

    CT4 V blackwing vs RS3

    I sold my 2018 RS3 for my Blackwing. Mine had an intake, intercooler, mounts, ECU and DSG tune and it was FAST. Especially when running E85. They're definitely way more tuneable and respond to mods better than the Blackwing. The downside when making more than 500whp, the pedal becomes very...
  10. J

    CT5-V Minimum Thickness of Steel Brake Rotors?

    The rotors look fine. Just have them turned at any Orileys. Your issue is that you overheated the pads and basically smeared pad material into the rotors. I had this happen to my RS3 and Fiesta ST that I used to track. I'd suggest getting a different pad for the track, Hawk DTC60s work...
  11. J

    Removing grille emblem - 4BW

    Sorry for the late response. See my attached picture from a photo I found of a CT4 BW grill I found on eBay. It requires some dexterity, but I was able to poke my fingers through the grill and bend the tabs on the emblem to pry it off. I did not have to undo the grille at all.
  12. J

    Removing grille emblem - 4BW

    I poked my fingers through the grill holes to bend the tabs (if I remember correctly one on each corner, look at your replacement badge for reference). As you bend them pull back on the emblem to allow each corner to detach. Repeat the same procedure for each tab until the whole emblem comes...
  13. J

    retrofitting CT5 display in CT4

    Do the volume and selector knobs pull off easily? I tried pulling them but they wouldn't disconnect. I wanted to ask before breaking something.
  14. J

    Has anyone “fixed” the ugly plastic piece below the infotainment screen?

    Can someone post a quick guide on how to remove that piece off the car? seems like the triangles come off to expose bolts underneath to remove the screen. The plastic piece is connected to the screen correct? Also do the volume and selection knobs pull off too?
  15. J

    For Sale Set of wheels/tires CT4 Blackwing $1800

    Looks good, thanks for sharing. I'm relatively local, would you be willing to part out just the tires by chance? It'll be dependent on whether I get a set of 18" Apex wheels.
  16. J

    For Sale Set of wheels/tires CT4 Blackwing $1800

    Just curious, but what did you replace them with?
  17. J

    What did you do to your Blackwing today?

    They're the GM Monochrome badges. Part# 84773627 for the 4BW I just added 2 little black strokes of vinyl to them to add a little more contrast.
  18. J

    What did you do to your Blackwing today?

    Just curious where America's Tire employees are jacking up your car from. Hopefully they don't place a jack under the aluminum brace under the car.
  19. J

    Apex Wheels for CT4-V Blackwing

    Curious on group buy options. Would like a 18" set for my CT4BW
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