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-   -   Invidia Gemini - Noise on downshifts (http://www.the370z.com/intake-exhaust/36589-invidia-gemini-noise-downshifts.html)

seande 05-17-2011 09:26 AM

Invidia Gemini - Noise on downshifts
 
So yesterday I made the switch to an Invidia Gemini CBE. If I downshift and don't match the revs exactly (NO SRM), I get a brief but loud sound, could be a rattle but almost sounds like grinding.

If I match the revs, I get nothing and its smooth.

Anybody else have this issue with the Invidia and know whats causing it?

Econ 05-17-2011 09:29 AM

maybe the exhaust is shaking a little as you downshift, thus you are hitting the crossmember as the exhaust vibrates/moves....


just an idea.

akong51 05-17-2011 12:08 PM

Quote:

Originally Posted by seande (Post 1116099)
So yesterday I made the switch to an Invidia Gemini CBE. If I downshift and don't match the revs exactly (NO SRM), I get a brief but loud sound, could be a rattle but almost sounds like grinding.

If I match the revs, I get nothing and its smooth.

Anybody else have this issue with the Invidia and know whats causing it?

I seem to be having the same issue with my Greddy SE exhaust. Your description is spot on to what I am experiencing...a rattle/grind noise that is brief but very noticable on downshifts and low throttle.

I think Econ may be right...makes sense. I just got it installed last Friday so I am hoping that the system just needs some time to settle completely. Just going to continue to monitor over the next couple weeks and see how it goes...:ugh2:

Econ 05-17-2011 12:36 PM

go under the car and look how much room u guys have between the midpipes/y/x pipe and the cross member.

should have at least a 1/2" - 3/4"

370Z JT 05-17-2011 07:55 PM

I had a rattling vibrating noise too on downshifts. Took it to amplified and they fixed it. Make sure there is clearance with the pipes.

seande 05-18-2011 09:42 AM

Quote:

Originally Posted by Econ (Post 1116557)
go under the car and look how much room u guys have between the midpipes/y/x pipe and the cross member.

should have at least a 1/2" - 3/4"

Econ was right. The clearance was just a little too tight. All fixed now.

Thanks! :ughdance:

Econ 05-18-2011 11:12 AM

Quote:

Originally Posted by seande (Post 1118137)
Econ was right. The clearance was just a little too tight. All fixed now.

Thanks! :ughdance:

:tiphat:


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