After installing the Banzai diff brace, I noticed that I am getting a lot of noise/vibration coming from my rear end under high rpm/load situations.

This is somewhat expected, since I'm assuming that the rigid body is now transfering more forces directly between the chassis and the diff, but I wanted to know what other people who have this brace have experienced...

Is this normal? Could the exhaust be rubbing the brace under hard acceleration?

EDIT: After a more detailed search, I found this little thread:

https://www.rx7club.com/showthread.p...ght=diff+brace

Apparently, it is normal...

 

No it is not normal. Everyone that has ever installed our brace and experienced any noise or vibration has ultimately found one or more of the following issues:

1. The diff bushings were shot
2. The motor mounts were shot
3. The PPF was cracked

https://www.rx7club.com/showthread.p...zai+diff+brace

 

I also had this same noise problem but came to find out my diff was really worn and the brace was amplifying the "howl" of the R&P. I put in another diff and the noise went away.