What you could do is lightly with your fist thump around in the area that you think the rattle is coming from in the engine bay.
I just installed a TRD CAI and it seemed to make a horrid noise when it went through the power band. I did some thumping around the intake and found that the housing of the TRD Intake was coming into contact with the inner fender just at the rear corner. Installed a rubber bushing and the sound went away.
So try that? Just slowly thump around with you fist and see if you can I.D. any sort of noise that might be the culprit.
Good luck!!
I just installed a TRD CAI and it seemed to make a horrid noise when it went through the power band. I did some thumping around the intake and found that the housing of the TRD Intake was coming into contact with the inner fender just at the rear corner. Installed a rubber bushing and the sound went away.
So try that? Just slowly thump around with you fist and see if you can I.D. any sort of noise that might be the culprit.
Good luck!!