Z1 High Flow Cats review

Nooree01 · 05-18-2019, 11:59 PM

I bought a set of Z1 HFC used of someone, the fitment was great the sound is amazing and i have it paired with a muffler delete. Its loud but it screams at wot there is a slight hiss from time to time. I didnt use the z1 gaskets because I was told they are trash. Highway drone isnt that bad. The guy who help me install it had testpipes with muffler delete and I didnt like the rasp this is definitely the way to go if you want testpipes deep sound without rasp and smell.

dts3 · 05-19-2019, 05:36 PM

Which gaskets did you use

Nooree01 · 05-19-2019, 05:38 PM

Honestly I am not sure the seller threw it in with the cats

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Quicksilvers · 05-19-2019, 09:46 PM

I would not recommend installing the Z1 exhaust gaskets as before I have had to take my exhaust apart to replace the Z1 exhaust gaskets because I had an exhaust leak due to their gaskets. I use red rtv and gaskets I have used FI,AAM,Berk,PPE,Motordyne etc. they all have worked well. You may have an exhaust leak? You should have a exhaust shop you trust diagnose your Z to see if you have an exhaust leak if you can’t do it yourself. Exhaust leaks are best diagnosed in person.

Nooree01 · 05-20-2019, 12:24 AM

Quote:

Originally Posted by Quicksilvers

I would not recommend installing the Z1 exhaust gaskets as before I have had to take my exhaust apart to replace the Z1 exhaust gaskets because I had an exhaust leak due to their gaskets. I use red rtv and gaskets I have used FI,AAM,Berk,PPE,Motordyne etc. they all have worked well. You may have an exhaust leak? You should have a exhaust shop you trust diagnose your Z to see if you have an exhaust leak if you can’t do it yourself. Exhaust leaks are best diagnosed in person.

What makes you think I have a leak, I didnt use the z1 gaskets

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projectpanda · 05-21-2019, 12:33 PM

Quote:

Originally Posted by Nooree01

What makes you think I have a leak, I didnt use the z1 gaskets

The hiss is normal for VQ motors. It might be because you mentioned it.

Nooree01 · 05-21-2019, 12:33 PM

Quote:

Originally Posted by projectpanda

The hiss is normal for VQ motors. It might because you mentioned it.

I figured

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05-18-2019, 11:59 PM	#1 (permalink)
Nooree01 Base Member Join Date: Sep 2018 Location: Kansas City, MO Posts: 108 Drives: 2011 370z Gray 7AT Rep Power: 7	Z1 High Flow Cats review I bought a set of Z1 HFC used of someone, the fitment was great the sound is amazing and i have it paired with a muffler delete. Its loud but it screams at wot there is a slight hiss from time to time. I didnt use the z1 gaskets because I was told they are trash. Highway drone isnt that bad. The guy who help me install it had testpipes with muffler delete and I didnt like the rasp this is definitely the way to go if you want testpipes deep sound without rasp and smell. Last edited by Nooree01; 05-19-2019 at 12:02 AM.

05-19-2019, 09:46 PM	#4 (permalink)
Quicksilvers A True Z Fanatic Join Date: May 2017 Location: Atlanta, GA Posts: 2,039 Drives: 2017 370z Rep Power: 25463	I would not recommend installing the Z1 exhaust gaskets as before I have had to take my exhaust apart to replace the Z1 exhaust gaskets because I had an exhaust leak due to their gaskets. I use red rtv and gaskets I have used FI,AAM,Berk,PPE,Motordyne etc. they all have worked well. You may have an exhaust leak? You should have a exhaust shop you trust diagnose your Z to see if you have an exhaust leak if you can’t do it yourself. Exhaust leaks are best diagnosed in person. __________________ Mr. Clean

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05-19-2019, 05:36 PM	#2 (permalink)
dts3 Track Member Join Date: May 2018 Location: Farmington Hills, MI Posts: 599 Drives: 08 Expedition Rep Power: 6765	Which gaskets did you use

05-19-2019, 05:38 PM	#3 (permalink)
Nooree01 Base Member Join Date: Sep 2018 Location: Kansas City, MO Posts: 108 Drives: 2011 370z Gray 7AT Rep Power: 7	Honestly I am not sure the seller threw it in with the cats Sent from my SM-G975U using Tapatalk