Ratting after installing Tomei UEL
 

Hey all, I apologize if this isn't the proper place but I was hoping for some ideas. I recently installed Tomei Uel headers on my 2017 brz with 140,000kms

During the second drive, after reinstalling the skid plate I can hear this vibration/tin like noise from the front right side of the car. It's very obvious when getting past 4k rpm.
( https://youtu.be/h_zVbverirg?si=xZeYRt-VpsZHW4I4 Most obvious in video after 3rd rev)

Just as a short list of what I have tried, I checked for contact along the skid plate itself, there was two small points of contact but I have since corrected them.

I retorqued all the bolts connecting the header to the block and overpipe.

Felt around the over pipe and its not contacting the sub frame

Any help is much appreciated


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Did you drive it with out the skidplate?

Check for exhaust leaks?

A short drive around the local neighbourhood, around 5 minutes.

Got under it tonight after and found that the heat shield mount closest to the header had very neatly cracked and was creating the racket.


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Updated :)

Yes I did, no soot or anything around or on the new gaskets.

Could probably clog the exhaust and shoot compressed air into it with some soapy water but for now I don’t think it’s necessary.


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