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Knock on wood, no such problems with mine yet. Did you guys do an isopropyl alcohol wipe down to prep before install?

I guess I should mention that I pulled/reinstalled the pumpkin myself, the labor I was charged was strictly for swapping the guts of the differential.

It's been good to me! Being an aftermarket clutch type it can be a little noisy in parking lots/tight turns at low speeds, but I was expecting that. It's more noisy when cold, once warmed up it's pretty well mannered. Mine did come with Nismo fluid. I also got mine straight from Japan (through...

I have this exact setup with the Z1 cover, it's all good. I also took the diff to a specialty shop for the install and setup and they said it actually didn't require any adjustment at all, it was a straight drop in to the open diff pumpkin.

I have done only the rears on my RZ34. It is the same procedure as the Z34 in back, at least.

No fitment issues expected with what you posted, you'll be slightly under flush which should look fine at stock ride height. I will also say that those Apex wheels look like a fine choice for a forged wheel, but if that is the price you're paying + tax and shipping you are definitely in the...

I don't know the actual size difference, but 18s should fit over the Performance calipers in terms of clearance for the wheel diameter. Spoke clearance is another issue. For example, Z1 sells their brake kit that is just aftermarket Performance trim calipers and states that a 5mm spacer is...

You will be perfectly fine with those sizes, don't worry! Guys who actually go to the track (road course, not drag strip) will often run square wheel and tire setups for easy rotation. For a street car, it is much less of a concern. It is also not a Sport v. Performance trim issue, the wheel...

None so far. Truthfully I haven't even had the car aligned yet, but others have reported being able to get back to a normal alignment with perhaps slightly more camber than is spec'd out, but still acceptable. The downsides are limited on a street car. The biggest and obvious one is that there...

You may not need coilovers if just want to close up the wheel gap some. I have the Swift springs on my car and the advertised 1.1" drop does not entirely close up the wheel gap, but it is better. For less than $400, it is a worthwhile modification. For coilovers you can start looking on the...

18x8 is pretty narrow for the front wheels, and these relatively heavy cars need all the tire up front that they can get. By comparison, the factory Sport trim wheel is 18x9 +34 and your Performance trim wheel on the car right now is 19x9.5 +40. It looks like the Weld Laguna comes in 18x9 +29...

I finally had a chance to test this out some. 2024 Sport MT w/ aftermarket LSD, for reference. The brake light switch method by itself only got me part of the way there (slip indicator light, AEB off light, dash notification of malfunction) but traction control was definitely still kicking in...

Bumping this thread to see if anyone found an answer or a solution?