[dmeadows013]

Hi guys, just bought a 2017 50th anniversary V6 and I had a quick question.

When I was looking at buying the car, I was hoping to find one (or order one) with the dual mode exhaust, but I also wanted the 50th anniversary package. Unfortunately, since they've stopped producing the 17 model year by now, I couldn't order that, and the car they had on the lot had everything I wanted except the dual mode exhaust.

I'm interested in eventually adding that myself, even though I'm guessing it will cost more than the factory option. From what I've read, I think I will need at least 3 things:

-NPP exhaust, either the Chevrolet one that ships on the car or an aftermarket one like Borla
-New rear diffuser to fit the quad tip exhaust, since I'm not going to try to cut my current one to fit
-Some sort of NPP controller. This is where I'm a bit confused... I've read that NPP in a box won't work with the 6, since it doesn't use vacuum pumps to close the valves. In that case, would I just need something like Mild2Wild, or something else entirely?

If this ends up being impossible, or will be ridiculously expensive, I'll probably just go with a performance exhaust. Can anyone recommend one that is somewhat loud but doesn't have significant drone?

Thanks

[Alpha1BC]

X-posting from the original V8 thread:

I actually researched this one quite a bit. In short, seems like it'll be a pain to try to match the factory setup. Mild2Wild, manually controlled cut-outs before the mufflers, or some other aftermarket dual mode setup would be the easiest way to go.

Originally Posted by dmeadows013

-NPP exhaust, either the Chevrolet one that ships on the car or an aftermarket one like Borla

Yes, anything with valves or even cutouts could be made to work as long as you can control the motor to open/close them. The factory NPP is open when at rest and requires input from the electric valve motor to close.

Originally Posted by dmeadows013

-New rear diffuser to fit the quad tip exhaust, since I'm not going to try to cut my current one to fit

Yes, if you want quad tip. GM part number is 23404791 that comes as a primered finish (still needs paint).

Originally Posted by dmeadows013

-Some sort of NPP controller. This is where I'm a bit confused... I've read that NPP in a box won't work with the 6, since it doesn't use vacuum pumps to close the valves. In that case, would I just need something like Mild2Wild, or something else entirely?

This one is tough on these cars. You'd need to wire into the BCM to control the factory valve motors and would also need a software flash on the radio and BCM to control the valve motors (assuming those controllers even have the required hardware to wire to). Would be much easier to do manual electric valves with a toggle switch or even vac controlled valves.

Originally Posted by dmeadows013

Can anyone recommend one that is somewhat loud but doesn't have significant drone?

I love the MRT V3 catback system on my V8 car. H-pipes give it a deep and throaty tone, lack of mufflers make it nice and loud when you step on the gas, and there's a resonator to help keep drone in check. I personally don't have any issue with the level of noise in the car when driving normally. Can easily hold conversations without yelling and such. I would imagine it's even a little bit better in the V6, but haven't heard one in person to know for sure.

[Skylane765]

I got a rear quad dual diffuser if your looking for one message me

[NowaChevyGuy]

Originally Posted by Skylane765

I got a rear quad dual diffuser if your looking for one message me

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