I had the PCI bearings installed last summer. I liked the quicker steering response but they
made all bumps noticeable. If I drove over a toothpic, I could feel it. Road noise was increased too.
I didn't think the increased steering response was worth the degraded NVH, so I put the TL Type-S
bushings back in. These are firmer than stock, but still rubber. I would recommend replacing only the
compliance bushings, part number is 51394-SEP-A11. They have a specific orientation to allow
proper stretching of the rubber, so pay attention when installing them.
Below are pics of the PCI bushings in a TSX LCA and a stock TL LCA for reference.
After the TL bushings were back in, I installed the Spoon rigid collars for the front and rear subframes.
This increased the steering response almost as much as the PCI bearings but actually reduced NVH.
It made the chassis feel more solid. This by far was the best mod I ever did to improve driving feel.
If you LIKE driving your TSX, then you will LOVE driving it after installing the rigid collars.