Exhaust ports
 

Hello,

Is there anyone who can tell me what the purpose of the three holes directly above the exhaust ports?

http://www.yawpower.com/ports.jpg

Can they be blanked off?

Thank you
Andrew

The guy that started this thread might know.

https://www.rx8club.com/series-i-major-horsepower-upgrades-93/building-custom-turbo-rx-8-a-46776/

Look like the Secondary Air Ports to me based on the workshop manual diagrams. See the attached diagram.

Thanks for responses.