Questions regarding 16 2SS features

Windowmaker · 04-06-2016, 08:19 AM

For background information I've got a 2SS M6 with dual mode exhaust and magnetic ride control suspension.

1. How exactly does the NPP exhaust work? As far as I know, there are valves that open and close, (at the muffler?) that activate at a certain point. What exactly engages these valves, speed, rpms?

2. What is the difference between turning traction control off and turning stabilitrak on? Also, what specifically changes on the car whenever you activate these features?

3. Does anyone know what EXACTLY changes with each drive mode?

4. How does the magnetic ride control work?

To be clear, I'm aware of the general functions of these features, but I'd like to know more specifically what happens and how they work.

Thanks

HumanWiki · 04-06-2016, 08:34 AM

1). There are valves on one exhaust tip on each side of your dual/duals that varies in openness based on the mode your car is in and the RPM level of the engine. Tour and Ice/Snow should have the least amount of actuation compared to Sport and Track, unless you override their activation in the MyLink screens. I cannot provide more than that, as I didn't opt for this on my own car.

3). This is actually listed in your owners manual in Drive Mode -- It's a table that's also been posted on here a couple times. Now, as for the absolute specifics of what damping in Track vs Sport means, or the percentages throttle application translated to engine response. I can't answer.

4). There's tons of information available to you from a quick Google search for Magnetorheological damper (that's the formal name for MSRC or Mag Ride). This will give you access to the most basic stuff like "it works with fluid and magnets" to the complex stuff like flux lines, shear thinning, non-Newtonian fluids and such. There are various input systems that talk to the various control systems on your car and that then will "tell" the shocks how much field strength to apply to the MR fluid which will change its viscosity and make it easier/harder to flow through the piston channels which results in changes to how easily it gives under load.

SuperSound · 04-06-2016, 10:19 AM

3) Depending on whether you have MRC, Auto trans, and NPP, the drive modes change throttle response and steering wheel effort at the minimum. If you have an auto, then shift points/firmness would change. NPP, then exhaust valves....MRC, then suspension setting.

I don't remember if traction control level is changed between the modes but maybe someone else can confirm that.

Glen e · 04-06-2016, 11:11 AM

Check the big grid in the owners manual. It has every mode and what it affects....

sstoronto · 04-06-2016, 01:32 PM

Also, just curious; If you can leave the NPP exhaust valves "open" via the MyLink customization, then why do some people actually pull the NPP fuse?

Glen e · 04-06-2016, 01:38 PM

Quote:

Originally Posted by sstoronto

Also, just curious; If you can leave the NPP exhaust valves "open" via the MyLink customization, then why do some people actually pull the NPP fuse?

Because at certain speeds the NPP valves don't stay open EVEN IN TRACK MODE......

NITRA10 · 04-06-2016, 01:53 PM

The NPP exhaust valve works by rattling constantly even after numerous attempts to repair.

sstoronto · 04-06-2016, 02:43 PM

Quote:

Originally Posted by Glen e

Because at certain speeds the NPP valves don't stay open EVEN IN TRACK MODE......

I see thanks.

Windowmaker · 04-06-2016, 05:08 PM

Quote:

Originally Posted by Glen e

Check the big grid in the owners manual. It has every mode and what it affects....

Oh you mean this vast source of knowledge and information?

04-06-2016, 08:19 AM	#1
Windowmaker Drives: 2016 2SS M6 Hyper Blue Metallic Join Date: Mar 2016 Location: Houston Posts: 14	Questions regarding 16 2SS features For background information I've got a 2SS M6 with dual mode exhaust and magnetic ride control suspension. 1. How exactly does the NPP exhaust work? As far as I know, there are valves that open and close, (at the muffler?) that activate at a certain point. What exactly engages these valves, speed, rpms? 2. What is the difference between turning traction control off and turning stabilitrak on? Also, what specifically changes on the car whenever you activate these features? 3. Does anyone know what EXACTLY changes with each drive mode? 4. How does the magnetic ride control work? To be clear, I'm aware of the general functions of these features, but I'd like to know more specifically what happens and how they work. Thanks

04-06-2016, 10:19 AM	#3
SuperSound Drives: '17 Camaro 2SS A8 Join Date: Jan 2015 Location: Eastern NC Posts: 5,063 View My Garage	3) Depending on whether you have MRC, Auto trans, and NPP, the drive modes change throttle response and steering wheel effort at the minimum. If you have an auto, then shift points/firmness would change. NPP, then exhaust valves....MRC, then suspension setting. I don't remember if traction control level is changed between the modes but maybe someone else can confirm that. __________________ Current: '17 2SS Hyper Blue, A8, MRC, NPP Past: '99 SS Camaro A4, '73 Camaro 383 A3 "Voices in your head are not considered insider information." 3800 Status - 6/16/16 (Built!) 6000 status - 6/29/16 (Delivered!)

04-06-2016, 11:11 AM	#4
Glen e Retired from Car mfrs.... Drives: 2LT RS/HR-V Join Date: May 2013 Location: /Fort Lauderdale Posts: 10,044	Check the big grid in the owners manual. It has every mode and what it affects.... __________________ Glen CLICK HERE for detailing a new car: detailing for non detailers CLICK HERE for how to rinseless CLICK HERE for EASY wheel sealant

04-06-2016, 01:32 PM	#5
sstoronto Drives: 2017 2SS. Join Date: Mar 2016 Location: Thornhill (Toronto area) Posts: 321	Also, just curious; If you can leave the NPP exhaust valves "open" via the MyLink customization, then why do some people actually pull the NPP fuse? __________________ 2017 2SS, 6M, Hyper Blue, Kalahari, NAV, NPP

04-06-2016, 08:34 AM	#2
HumanWiki Drives: Car Join Date: Jun 2010 Location: Place Posts: 3,361	1). There are valves on one exhaust tip on each side of your dual/duals that varies in openness based on the mode your car is in and the RPM level of the engine. Tour and Ice/Snow should have the least amount of actuation compared to Sport and Track, unless you override their activation in the MyLink screens. I cannot provide more than that, as I didn't opt for this on my own car. 3). This is actually listed in your owners manual in Drive Mode -- It's a table that's also been posted on here a couple times. Now, as for the absolute specifics of what damping in Track vs Sport means, or the percentages throttle application translated to engine response. I can't answer. 4). There's tons of information available to you from a quick Google search for Magnetorheological damper (that's the formal name for MSRC or Mag Ride). This will give you access to the most basic stuff like "it works with fluid and magnets" to the complex stuff like flux lines, shear thinning, non-Newtonian fluids and such. There are various input systems that talk to the various control systems on your car and that then will "tell" the shocks how much field strength to apply to the MR fluid which will change its viscosity and make it easier/harder to flow through the piston channels which results in changes to how easily it gives under load.

04-06-2016, 01:53 PM	#7
NITRA10 Drives: 16 Camaro SS Join Date: Nov 2015 Location: 818 Posts: 413	The NPP exhaust valve works by rattling constantly even after numerous attempts to repair.

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