Invidia Germini catback

[RZ34>Mk.V]

Hi All,

Thanks for sharing this post, I have installed the Gemini Catback Exhaust on my 2023 Z.

I was wondering you have experienced the following, maybe I have done somthing incorrectly please advise.

I have AMS Full Race Downpipes (just in case this matters).

I expereinced the following:

1) A drone & rattle inside the cabin with vibrations felt in doors and seats inlcuding the steering wheel when driving in the 2000-2500rpm range.

2) Is the Exhaust designed to be the lowest part of the car? I find it makes contact with the gound on some speed bumbs / humps? (refer attached picture).

Note my car is ever so slightly lowered using Tein Flex Z Coilovers.

Thanks in Advanced

I noticed a rattle/vibration behind the dashboard near the doors after installing a B6A resonated lower downpipe. It went away though after a short while. I don't know what causes it. All clearances were fine after inspecting the car on a lift. The Invidia exhausts could benefit from a flex pipe to mitigate vibration. In any case, the vibration went away and it all sounds great with no drone

 

[Noddy91]

Yeah those downpipes are resonator free. Talk to a chat bot, download an app to analyze frequency range during drone. Talk to chatbot regarding what length of resonator will be most effective for removing said frequency range.

Re: door rattleProlly gonna need a second set of ears to identify or show friend how to produce the rattle while you ride shotgun

Thanks - I'm looking into a J pipe, if the matter does not resolve on its as per
RZ34>Mk.V advice.