While I agree that there's some vibrations present when you lug the car, after a shop installed my OEM Exedy clutch, it's vibrating so much that my rear deck lid is just ringing. I've had the car since it's was new and it never used to vibrate so much that I can feel it in my spine. I also drove 2 other FRS/BRZs and both of them did not exhibit any sort of harsh vibration. The only thing that was changed during the clutch install was the Exedy OEM clutch and new TOB. The flywheel was just cleaned, not machined.



I saw the car a bit when it was getting the clutch installed. It seemed like they didn't support the engine so I'm wondering if some of the heatshields were bent or something. I'll be removing the 2 undertrays tomorrow and drive around.... yay for witch hunting!


@radroach Unfortunately, the whiteline bushing install didn't actually do anything :( I was really hoping it's just a trans mount issue.

Did you ever work out what this was. I have exactly the same issue and Toyota are blaming the new clutch...

Mention function failed and I missed the recording. :(

After listening and catching up, it's not minor. If it rattles the rear deck lid, that's something heavy like engine mount, starter motor, front pipe support? @Mr.ac still nailed it in first response.

I never found out what it was. Checked the torques. Engine mounts, trans mounts, trans support were fine. Starter motor didn't rattle on start up, front pipe was fine.



My ACT clutch kit started dragging a while later, so I removed it all together and put the OE clutch back in

So you changed just the clutch and the vibration stopped?

In my case, yes. It happened while I had an aftermarket clutch kit on the car. Went away when I put the OE one back in.

Could have been installation, could have been the clutch. No way to really tell.

That's a bummer. Honestly, the stock transmission is weak enough that I wouldn't install a tighter clutch anyhow.