Borla ATAK Cat Back install

Tricksta · 03-25-2021, 06:55 AM

Anyone know if you have to do cutting on factory exhaust to install this, or does it bolt right up?

Borla Part # 140727

ZLE dude · 03-25-2021, 07:01 AM

You have to cut behind the secondary cats. From the installation pdf...

Tricksta · 03-25-2021, 07:40 AM

Quote:

Originally Posted by ZLE dude

You have to cut behind the secondary cats. From the installation pdf...

i checked that pdf, but the set im looking at has flanged on the front pipes, which tells me if the pipe has flanged ends, you don't actually need to cut anything.. I've got misleading information from everywhere.

Tricksta · 03-25-2021, 07:44 AM

might be that it bypasses the secondary cats

EDFHOBBIES · 03-25-2021, 07:55 AM

It's cut just after the last cat on each side. I ran into a problem installing the Carbon fiber system on to my TSP headers with off road pipes vs hi flow cats. Apparently the off road pipes and the Borla zl1 catback are the exact same tube size so there was no shoving the pipe into one another then clamping. I had the notch the Y pipe and the off road pipe and hammer them in to one another (one would expand the other would contract) I tacked welded any leaks I saw. I don't have a pipe expander which would of been the correct fix.. they are cheap just didn't want to wait.

https://www.summitracing.com/parts/l...hoCsvsQAvD_BwE

Tricksta · 03-25-2021, 08:01 AM

so this is what I'm guessing is going on, someone used the borla PN# 60606 and combined it with borla #11925 - the 60606 front pipes bypass the secondary cats. Because comparing pictures of what the seller has to that part number, they look identical.

EDFHOBBIES · 03-25-2021, 08:15 AM

I might mention I ran the stock exhaust at first with the TSP and it was plug and play factory exhaust slipped right into the Headers off road pipes.

My wifes car was the test car for Borla here are the official cuts for Cat back and Axle lol.

Tricksta · 03-25-2021, 08:16 AM

Quote:

Originally Posted by EDFHOBBIES

I might mention I ran the stock exhaust at first with the TSP and it was plug and play factory exhaust slipped right into the Headers off road pipes.

My wifes car was the test car for Borla here are the official cuts for Cat back and Axle lol.

Headers will be next item on my list, headers,lower pulley, cai, tune is next stop.

boosedep3 · 03-25-2021, 09:06 AM

Does anyone even still sell the offroad pipes so cutting is not required? I know stainless work and AWE does not sell them anymore.

ZLE dude · 03-25-2021, 10:47 AM

Quote:

Originally Posted by boosedep3

Does anyone even still sell the offroad pipes so cutting is not required? I know stainless work and AWE does not sell them anymore.

I have the CSP (stainless works) headers with off-road pipes. Cutting is still required. The secondary cats are connected to the factory mid-pipe so anything that's going to join headers to the factory pipes will have to be cut.

03-25-2021, 07:01 AM	#2
ZLE dude Drives: '18 ZL1 1LE Join Date: May 2020 Location: KY Posts: 219	You have to cut behind the secondary cats. From the installation pdf... Attached Images __________________ 2018 ZL1 1LE - Summit White, PDR, Rotofab CAI, 95mm TB, CSP 2" catless LT's, JMS Voltage Booster, AEM X-series WB, DSX flex fuel sensor, Banks Data Monster, Tuned by Ted Jannetty, 5% Tint, Blackvue DR900S-2CH, Diode Dynamics lighting, IGL Kenzo ceramic coating

03-25-2021, 07:44 AM	#4
Tricksta Drives: 2018 ZL1 A10 Join Date: Nov 2013 Location: Leipsic,Ohio Posts: 3,811 View My Garage	might be that it bypasses the secondary cats __________________ Modifications GM Dark Tail Lights / 3rd Brake Light & Reflectors \| LED Reverse Lights \| Diode Dynamics Side Markers \| Borla "ATAK" Cat Back Exhaust

03-25-2021, 07:55 AM	#5
EDFHOBBIES Dyno Show Queen LOL Drives: 16 SS & 17 ZL1 Both Yellow Join Date: Jan 2014 Location: Houston Posts: 4,354 View My Garage	It's cut just after the last cat on each side. I ran into a problem installing the Carbon fiber system on to my TSP headers with off road pipes vs hi flow cats. Apparently the off road pipes and the Borla zl1 catback are the exact same tube size so there was no shoving the pipe into one another then clamping. I had the notch the Y pipe and the off road pipe and hammer them in to one another (one would expand the other would contract) I tacked welded any leaks I saw. I don't have a pipe expander which would of been the correct fix.. they are cheap just didn't want to wait. https://www.summitracing.com/parts/l...hoCsvsQAvD_BwE __________________ Kong Ported 2650, Crawford Racing Port Injection, Weapon X 112mm Adapter, NW112mm TB, Livernois Ported LT4 Heads, Lingenfelter GT32 stealth cam, Haltech Elite, and Carbon by Trufiber

03-25-2021, 08:01 AM	#6
Tricksta Drives: 2018 ZL1 A10 Join Date: Nov 2013 Location: Leipsic,Ohio Posts: 3,811 View My Garage	so this is what I'm guessing is going on, someone used the borla PN# 60606 and combined it with borla #11925 - the 60606 front pipes bypass the secondary cats. Because comparing pictures of what the seller has to that part number, they look identical. __________________ Modifications GM Dark Tail Lights / 3rd Brake Light & Reflectors \| LED Reverse Lights \| Diode Dynamics Side Markers \| Borla "ATAK" Cat Back Exhaust

03-25-2021, 08:15 AM	#7
EDFHOBBIES Dyno Show Queen LOL Drives: 16 SS & 17 ZL1 Both Yellow Join Date: Jan 2014 Location: Houston Posts: 4,354 View My Garage	I might mention I ran the stock exhaust at first with the TSP and it was plug and play factory exhaust slipped right into the Headers off road pipes. My wifes car was the test car for Borla here are the official cuts for Cat back and Axle lol. Attached Images __________________ Kong Ported 2650, Crawford Racing Port Injection, Weapon X 112mm Adapter, NW112mm TB, Livernois Ported LT4 Heads, Lingenfelter GT32 stealth cam, Haltech Elite, and Carbon by Trufiber

03-25-2021, 06:55 AM	#1
Tricksta Drives: 2018 ZL1 A10 Join Date: Nov 2013 Location: Leipsic,Ohio Posts: 3,811 View My Garage	Borla ATAK Cat Back install Anyone know if you have to do cutting on factory exhaust to install this, or does it bolt right up? Borla Part # 140727 __________________ Modifications GM Dark Tail Lights / 3rd Brake Light & Reflectors \| LED Reverse Lights \| Diode Dynamics Side Markers \| Borla "ATAK" Cat Back Exhaust

03-25-2021, 09:06 AM	#9
boosedep3 Drives: 2018 SS1LE Join Date: Dec 2018 Location: Maryland Posts: 150	Does anyone even still sell the offroad pipes so cutting is not required? I know stainless work and AWE does not sell them anymore.

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