Secondary cat delete?

Pantherzl1 · 11-18-2019, 02:04 PM

Anyone cut there secondary cats? Any noise difference? Is it worth it?

Checkmate1 · 11-18-2019, 02:19 PM

Yes, Yes and Yes.

PROMETHEUS · 11-18-2019, 03:11 PM

I removed mine, when I went with the AWE Track Edition Catback with Performance Link Pipes. Have no regrets.

TRZ06 · 11-18-2019, 03:33 PM

Mine came out when I added the Corsa Cat-back system. I can't say what effect it has, as I did it all at the same time, but I do get quite a bit more snap, crackle, & pop (especially when in cold start mode), sounds amazing.

ProjectZL1 · 11-18-2019, 05:13 PM

Anyone sell a secondary cat delete kit? Or is everyone just going to the muffler shop.

lt4camaro · 11-18-2019, 05:34 PM

Quote:

Originally Posted by ProjectZL1

Anyone sell a secondary cat delete kit? Or is everyone just going to the muffler shop.

Doesnt the Borla xpipe (mid pipe) eliminate the secondary cats? it does on the V6 cars and all the C7 corvettes.

17CamaroZL1 · 11-18-2019, 05:47 PM

Quote:

Originally Posted by lt4camaro

Doesnt the Borla xpipe (mid pipe) eliminate the secondary cats? it does on the V6 cars and all the C7 corvettes.

Yes it does

Joshinator99 · 11-18-2019, 06:00 PM

Quote:

Originally Posted by ProjectZL1

Anyone sell a secondary cat delete kit? Or is everyone just going to the muffler shop.

AWE Tuning offers the secondary cat delete as an add-on to their catback kits. They call it the Performance Link Pipes. I did that when I did my AWE Resonated Touring setup, sounds mint! Touring is really a misnomer though...it is not quiet!

Kmeleon · 11-18-2019, 07:37 PM

Quote:

Originally Posted by 17CamaroZL1

Yes it does

Not anymore.... Borla succombed to the pressure from the tree huggers and pulled part #60606 about a year ago. I tried to find one left in stock months ago and never succeeded. You can however go with a Corsa double Helix which is still available.

Pantherzl1 · 11-18-2019, 07:55 PM

does anyone have a video with the stock NPP

Chris C 1SS 1LE · 11-18-2019, 08:33 PM

Quote:

Originally Posted by Pantherzl1

does anyone have a video with the stock NPP

Did tht first. Big difference but wasn't enough. Now it's enough.

Chris C 1SS 1LE · 11-18-2019, 08:35 PM

Quote:

Originally Posted by Kmeleon

Not anymore.... Borla succombed to the pressure from the tree huggers and pulled part #60606 about a year ago. I tried to find one left in stock months ago and never succeeded. You can however go with a Corsa double Helix which is still available.

EPA in San Francisco. There is a joke in there somewhere.

FoundNemo · 11-19-2019, 05:30 AM

I've read quite a few folks (C7 and ZL1) noting a loss of low end torque a bit down low with the 2nd cat delete on an otherwise stock exhaust. No CEL but when I had my 12 ZL1 I also noticed the same with the 2nd cats gone when i deleted them on the stock exhaust. Interesting and not sure why.

Rlhay2 · 11-19-2019, 10:07 AM

Quote:

Originally Posted by Kmeleon

You can however go with a Corsa double Helix which is still available.

A solid thumbs up for the Corsa double helix. At cruising speeds with the stock suitcase the car is as quiet as stock, and this is with headers. And it is disturbing the peace loud when given full throttle!

11-18-2019, 02:04 PM	#1
Pantherzl1 Drives: 2019 Camaro zl1 Join Date: Jul 2019 Location: Detroit Posts: 54	Secondary cat delete? Anyone cut there secondary cats? Any noise difference? Is it worth it?

11-18-2019, 02:19 PM	#2
Checkmate1 Drives: Garnet Red / ZL1 1LE Join Date: Apr 2016 Location: Bel Air, MD Posts: 492	Yes, Yes and Yes. __________________ #SAVETHEMANUALS

11-18-2019, 03:33 PM	#4
TRZ06 Drives: 22' Porsche PDK GT4 Join Date: Mar 2018 Location: Bay Area Posts: 2,014	Mine came out when I added the Corsa Cat-back system. I can't say what effect it has, as I did it all at the same time, but I do get quite a bit more snap, crackle, & pop (especially when in cold start mode), sounds amazing. __________________ Current: 22' Porsche PDK GT4 (MCS 2-way remote dampers) Previous: 18' NFG 2SS *1LE* (ZL1 1LE solid rear cradle bushings & Corsa Exhaust) 16' F80 M3 (Ohlin R/T Coilovers) 13' Audi TTRS (APR Stage 1, MSS Springs) 09' C6 Z06 08' E90 M3 06' 335i (KW V2 Coilovers) 03' C5 Z06

11-18-2019, 05:13 PM	#5
ProjectZL1 Drives: 2017 Camaro ZL1 Join Date: Nov 2019 Location: al Posts: 93	Anyone sell a secondary cat delete kit? Or is everyone just going to the muffler shop. __________________ 2017 ZL1 M6 Youtuber - https://www.youtube.com/c/projectzl1

11-18-2019, 03:11 PM	#3
PROMETHEUS Drives: 2019 ZL-1, Shadow Gray, Sold Join Date: Jan 2019 Location: Fredericksburg, VA Posts: 1,390	I removed mine, when I went with the AWE Track Edition Catback with Performance Link Pipes. Have no regrets.

11-18-2019, 07:55 PM	#10
Pantherzl1 Drives: 2019 Camaro zl1 Join Date: Jul 2019 Location: Detroit Posts: 54	does anyone have a video with the stock NPP

11-19-2019, 05:30 AM	#13
FoundNemo Drives: 2019 ZL1 Join Date: Oct 2019 Location: GA Posts: 573	I've read quite a few folks (C7 and ZL1) noting a loss of low end torque a bit down low with the 2nd cat delete on an otherwise stock exhaust. No CEL but when I had my 12 ZL1 I also noticed the same with the 2nd cats gone when i deleted them on the stock exhaust. Interesting and not sure why.

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