i have a noise between 5-7k rpm, very metallic sounding. it looks like no one found out exactly what it was yet?

i thought it was my greddy SE exhaust rattling. It was a very slight noise at 5-6k rpm with my stock cat on, but when i put a 70mm berk HFC, the noise is MUCH more audible now and much more metalllic sounding. It's got me worried a bit. Hope it's part of the exhaust and not a noise from the engine

 

i got the same noise. thinking maybe CV boot related or along that line.

anyone else?

 

just went out and took a video and sound clip of the noise my car is making. posted in a new thread here: https://www.s2ki.com/forums/index.ph...&f=22&t=830003