Invidia Gemini - Anyone else having issues?

esfourteen

So far my muffler has broke at the hanger welds and now their is a crack inside the flex joint in the Y pipe, all in 4,000 miles with no track time at all. The shop near me said the had another Z come in recently with a leak in the Y pipe on the same side, so clearly there are quality control issues.

I suppose you get what you pay for, it's the cheapest full catback out there, but IMO it's one of the best looking for that stock-ish look and sounds amazing.

Is anyone else having any issues with their Gemini?

UPDATE:

I figured I should update this since I fixed the issue, the flex pipe was cracking because I didn't re-install the oem cat bracket when installing test pipes. The extra flex from the engine without that bracket was too much for the flex pipes it seems. It's been several months since re-installing the bracket with no issues.

That doesn't explain why the hanger all the way at the muffler cracked at the weld, but I'll toss that up to a manufacturing issue and Invidia replaced it very fast. Still very happy with the exhaust.

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djpathfinder

Sorry to hear that you're having problems. I haven't had any issues on mine. BTW, it doesn't have a Y-pipe. The design uses a X-pipe, which makes it a true dual exhaust system. Was it at one of the flanges in front of the cross-over that you had a leak?

I bought the Gemini for my Z based on how satisfied I was with the Invidia Q300 (older model) exhaust I installed on my FX45 1.5 years before. Both exhausts are working perfectly.

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2012 GT-R Black Edition Jet Black
2010 370Z 40th Anniversary // SOLD

esfourteen

I guess I should have been more clear, yes it is an X pipe, I just meant the portion before the X near the cats where the flex joints are =]

It's leaking from inside the flex joint, how many miles do you have on your exhaust and how cold has it gotten there?

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djpathfinder

It was installed back in April, and I've got 8000 km (5000 mi) on it now. The temps have been down to around freezing.

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2012 GT-R Black Edition Jet Black
2010 370Z 40th Anniversary // SOLD

W.O.W. 370Z

I have had zero issues so far. I will check mine to be sure but I am sorry to hear you are having issues.

esfourteen

I'm hoping I just got a bad batch, it's just frustrating to have the muffler break and now the flex pipe, and to hear of someone else having the same exact leak on the same side in the flex pipe.

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TBSS2008

I had a leak on the passenger side resonator. But it was not from lack of quality I scrapped the exhaust hard over a large speed bump. I haven’t had any issues with the flex pipe and my leak has been fixed. I have 13,000 miles on my Invidia Gemini.

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2011 Black Corvette Grand Sport 6spd | NNP Daul Mode Exhaust
2008 Trail Blazer SS Black | SuperChips Tune
2009 370Z Black 7AT Touring Sport (TRADED)

coaster

No issues here for me either. I've had mines for ~1k miles now.

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Cars owned: DC2/AP1/NA2/FG2/Z33/Z34/R35

kevr6

I put about 8k on my Q300 exhaust and no issues (minus the rasp) and now have put 3k on my Gemini with no issues. I also scrape on occasion. I will pay more attention at each oil change now.

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djpathfinder

Yes the old Q300 was a little raspy for the VQ engines, which fortunately my FX's VK engine did not have. The Gemini was designed to remedy that. OP, did you check the warranty on that or contact the vender?

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2012 GT-R Black Edition Jet Black
2010 370Z 40th Anniversary // SOLD

esfourteen

so a few members here and only me with issues so far, just my luck eh? I hope it was just a fluke and none of you guys wind up with anything similar.

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atx370z

slightly off topic...

how does the invidia exhaust sound with hfc's? raspy?

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Berk HFC & CBE, Stillen G3's, AMS Crank Pulley, JWT Flywheel,
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djpathfinder

Have a look at these two threads. They have youtube links to video demonstrating the sound in combination with G3 intake and ERZ HFC.:

Invidia Gemini CBE & ERZ HFC Review (with db comparison)

ERZ Performance High Flow Cats, Install and Review Thread

For my car, there's a tiny hint of rasp at around 3500 RPM heard from the outside, not in the cabin. I think this combination produces the best combination in terms of sound quality and minimal amount of rasp...you can read the impressions of the OPs of the above threads.

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2012 GT-R Black Edition Jet Black
2010 370Z 40th Anniversary // SOLD

HOOPZ

Sorry to hear about your luck with it. I've got about 5k on mine so far and no problems yet, knock knock.

I don't have hfc's, but i do have the gtm resonated test pipes and it sounds great. No rasp that ive noticed, but I've not heard it from the outside under normal driving conditions.

370Z JT

lately Ive been getting this violent rattle (for like 1 second) when downshifting at low RPMs. Usually happens after I drive the car hard for a few runs.

Anybody have this issue?

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