16-17 SS bi modal mufflers controller - Pontiac G8 Forum: G8 Forums - G8Board.com
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post #1 of 16 (permalink) Old 05-08-2018, 11:05 AM Thread Starter
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16-17 SS bi modal mufflers controller

I am looking for some impute or suggestion on how to make a 16-17 SS bi modal mufflers work I know DSX tuning used to sell the controller now they don't
Has anyone else had successfully made the mufflers work?
Amy advise would be greatly appreciated
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post #2 of 16 (permalink) Old 05-09-2018, 07:26 AM
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Originally Posted by gmpontiacguy View Post
I am looking for some impute or suggestion on how to make a 16-17 SS bi modal mufflers work I know DSX tuning used to sell the controller now they don't
Has anyone else had successfully made the mufflers work?
[FONT=Calibri]Amy advise would be greatly appreciated [/FONT]
Last time I asked Amy for advice, I ended up with two kids and $800 a month worth of child care expenses...just saying.
Don't think anyone has even tried to get these mufflers to work on a G8. Try a company called Varrex exhaust. They have a nice bi-modal setup for our cars.

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post #3 of 16 (permalink) Old 05-10-2018, 10:15 AM
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Try a company called Varrex exhaust. They have a nice bi-modal setup for our cars.
Do you happen to have a part number for the muffler? I checked out their website and only saw universal fit mufflers. Looks like you would have to piece together a set. Would be nice if they already had a muffler fit the G8 with the quad tips and stock connector already welded.

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post #4 of 16 (permalink) Old 05-10-2018, 10:55 AM
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Do you happen to have a part number for the muffler? I checked out their website and only saw universal fit mufflers. Looks like you would have to piece together a set. Would be nice if they already had a muffler fit the G8 with the quad tips and stock connector already welded.
XForce makes a Varex catback (ES-VF73-VMK-CBS) and long tubes (XF-HS-VE78-KITB).

There have been past threads about getting just the Varex axlebacks, but they're not available.

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post #5 of 16 (permalink) Old 05-10-2018, 11:01 AM
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There have been past threads about getting just the Varex axlebacks, but they're not available.
Yeah this is what I was looking for. Just the axle backs.


Thanks

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post #6 of 16 (permalink) Old 05-10-2018, 01:10 PM
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Anyone know the details of the electric solenoid/motor on the mufflers? PWM controlled? Or is it a simple 12VDC on/off?

2009 G8 GT, White Hot, Cortex, Camaro Trans Pan, VCM Intake, GXP Mufflers
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post #7 of 16 (permalink) Old 05-10-2018, 01:40 PM Thread Starter
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its def not simple 12 v v on and off there is also controller involved to regulate the valves
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post #8 of 16 (permalink) Old 05-10-2018, 07:56 PM
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its def not simple 12 v v on and off there is also controller involved to regulate the valves

So it's a variable position valve? On a stock SS, do you know the behavior of the valve?

I know it is a three terminal connector. I know it defaults to the open position when no power/signal present. Does it close during regular driving and then open during more aggressive throttle? Does it just open fully, or does it have a linear behavior based on throttle position?

I work in the marine industry and have some basic experience with controls and automation. Many actuators and controllers use a 0-10V or a 4-20mA reference. If someone had a wiring schematic for the stock 16/17 SS I might be able to work backward. Lots of little aftermarket control boards are available and can be adapted for lots of things.

Without knowing anything more about the muffler valve actuator, I might guess that two pins are constant power (+12VDC, 0V) and the third pin is a positional reference controlled by some onboard module.

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post #9 of 16 (permalink) Old 05-11-2018, 06:59 AM Thread Starter
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I have them set up on my 2014 SS with a controller it works flawlessly. The guy who was making controllers stopped making them because he ran in to some issues. Basically they are not controlled by throttle they are either open or closed. when the power is not supplied to them they default to open. buzzard302 I think you are right about the pin on the connector functionallety but its hard to tell. IF there is anythig i can help ypu with let me know. Maybe i can get you one valve that you can play with ?
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post #10 of 16 (permalink) Old 05-11-2018, 07:52 AM
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I have them set up on my 2014 SS with a controller it works flawlessly. The guy who was making controllers stopped making them because he ran in to some issues. Basically they are not controlled by throttle they are either open or closed. when the power is not supplied to them they default to open. buzzard302 I think you are right about the pin on the connector functionallety but its hard to tell. IF there is anythig i can help ypu with let me know. Maybe i can get you one valve that you can play with ?

If I just had a spec sheet for the valve, I might be able to figure it out. I don't necessarily have the time to play around with a real actuator right now to be honest (baby on the way, crunching house projects). I was just hoping to be helpful and maybe speculate on how it could be done. If you have an actual valve, can you see if there are any markings on it? Maybe a part number, manufacturer name, etc. Might be able to find a spec sheet to see how the motor works.

2009 G8 GT, White Hot, Cortex, Camaro Trans Pan, VCM Intake, GXP Mufflers
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post #11 of 16 (permalink) Old 05-11-2018, 08:01 AM Thread Starter
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i will try to find out
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post #12 of 16 (permalink) Old 05-11-2018, 08:15 AM
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Yeah this is what I was looking for. Just the axle backs.


Thanks
You and me both.

There is another part number for the XForce catback on Summit: ES-VF73-CBS. Haven't called them, but for some reason it's $360 cheaper than ES-VF73-VMK-CBS. \_(ツ)_/

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post #13 of 16 (permalink) Old 05-11-2018, 01:44 PM Thread Starter
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found this thread on corvette forum maybe this might help

https://www.corvetteforum.com/forums...-retrofit.html
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post #14 of 16 (permalink) Old 05-11-2018, 09:07 PM
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Muffler actuation is tied to the drive mode selected by the knob in the center of the console on the SS. Tour mode is quiet, Sport or Performance (or Track) is loud mode.
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post #15 of 16 (permalink) Old 06-11-2018, 02:11 AM
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Thanks for sharing the information. . .
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post #16 of 16 (permalink) Old 06-13-2018, 02:47 AM
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Great information shared.....
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