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Borla axleback exhaust question

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Old Dec 11, 2021 | 09:09 AM
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Default Borla axleback exhaust question

I have a 2018 Stingray with stock non-NPP exhaust. After much research on the forum and web, I have decided on the S-type (medium sound) axle back system with AFM valves in the pipe. I am not making any other exhaust changes. I want the AFM valves, instead of simulator plates, so there is not an issue some day with my GM extended plan. Borla has told me by email that the valves work fine and don't throw CEL codes. I am looking for any user satisfaction feedback from forum members.
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Old Dec 15, 2021 | 03:10 AM
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I understand your concern about Borla AFM simulator plates. I went with AWE AFM back mufflers to avoid any GM warranty plan problems. Easy solution and sound is great!
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Old Dec 15, 2021 | 12:52 PM
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Originally Posted by BillyC7
I understand your concern about Borla AFM simulator plates. I went with AWE AFM back mufflers to avoid any GM warranty plan problems. Easy solution and sound is great!
Thanks. I had taken AWE off my list since they don't show the valve-back option any more. I should call them to find out if it's still available. Did you get the touring or track version?
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Old Dec 15, 2021 | 08:16 PM
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Originally Posted by RonF-vette
Thanks. I had taken AWE off my list since they don't show the valve-back option any more. I should call them to find out if it's still available. Did you get the touring or track version?
An AWE rep said that they stopped the valve back set because the customers wanted AFM simulators. Some internet resellers might have the old valve back version in stock.
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Old Dec 16, 2021 | 09:59 AM
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I'm sure the Borla AFM valves/mid-pipe work just fine. It's a pretty simple system, and they likely re-use the GM actuator. However, I've never seen a GM warranty cover Borla (or any aftermarket) exhaust. If that's your reason for getting this system, I'd triple check that the warranty covers it.
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Old Dec 16, 2021 | 11:22 AM
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Originally Posted by Patfitz9
I'm sure the Borla AFM valves/mid-pipe work just fine. It's a pretty simple system, and they likely re-use the GM actuator. However, I've never seen a GM warranty cover Borla (or any aftermarket) exhaust. If that's your reason for getting this system, I'd triple check that the warranty covers it.
Thanks. Not looking for the exhaust to be warranted, but want to avoid engine extended warranty disputes over using simulators.
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Old Dec 16, 2021 | 12:07 PM
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i have the borla atak, it has the brackets to mount the actuators, but they dont actually do anything


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Old Dec 16, 2021 | 12:13 PM
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from their website for model 11869CB

This system does NOT include AFM or NPP valves
For vehicles that are either NOT equipped with AFM and NPP or has AFM and NPP disabled
System has non-functioning mounts where AFM actuators can be mounted if the vehicle had them
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Old Dec 17, 2021 | 12:59 PM
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Thanks, but I don't want to eliminate the AFM valves. Maybe in a couple of years when the GM extended plan has run out.
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Old Dec 17, 2021 | 02:13 PM
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do you even use eco mode? with the actuators still in place and functioning, nothing will happen
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Old Dec 17, 2021 | 05:28 PM
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Originally Posted by Travlee
do you even use eco mode? with the actuators still in place and functioning, nothing will happen
Well, I should have mentioned that the car is a simple Stingray with A8 transmission. AFM operates in all drive modes (none are called eco). It can be defeated by leaving the gear selector in "M" or using a Range device, but I don't want to do either. I just want some V8 rumble without a major alteration of the exhaust system. And that decision is based on wanting the remaining GM extended protection plan to be solid for the next couple of years.
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Old Dec 17, 2021 | 06:34 PM
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Even if you are running on 4 cylinders, getting rid of afm will just make it sounds weird. Your car your choice
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Old Dec 17, 2021 | 07:10 PM
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Originally Posted by Travlee
Even if you are running on 4 cylinders, getting rid of afm will just make it sounds weird. Your car your choice
How many ways do I have to say that I don't want to get rid of AFM. What the heck are you reading? The entire thread is about keeping AFM but having more sound..
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Old Dec 17, 2021 | 07:36 PM
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Originally Posted by RonF-vette
How many ways do I have to say that I don't want to get rid of AFM. What the heck are you reading? The entire thread is about keeping AFM but having more sound..
Yep it's official, you are a grumpy old man

I was just offering suggestions, just like everyone else. Do whatever makes you happy
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Old Dec 18, 2021 | 03:03 AM
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Got mine from Complete Street Performance. They may still have them. CSPRacing.com
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Old Dec 18, 2021 | 02:44 PM
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Originally Posted by BillyC7
Got mine from Complete Street Performance. They may still have them. CSPRacing.com
AWE recommended RDP, so it's on order. Thanks

Last edited by RonF-vette; Dec 18, 2021 at 09:08 PM.
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Old Dec 22, 2021 | 12:30 AM
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Just go headers and tune. That'll get ride of any CEL off AFM and it'll eliminate it altogether
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Old Dec 22, 2021 | 06:51 AM
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Originally Posted by Frid
Just go headers and tune. That'll get ride of any CEL off AFM and it'll eliminate it altogether
In before he whines about the warranty and says "how many different ways do I have to say blah blah blah"
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Old Dec 22, 2021 | 09:34 PM
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The S-Type is not loud at all. Especially if ur still running stock headers

I have American racing long tubes with borla attack. And I wish mine was louder.
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