Originally Posted by Goodwood

So you have the valves opened and the Soul OAPs on with the resonated exhaust now, and there's some drone at certain rpms? This is what I'm afraid of.

Originally Posted by HooosierDaddy

Initial impression of SOUL valved rear section.

To be clear I already had the SOUL OAP's running with the other stock components (valves disconnected) and loved that setup. But felt as though the stock PSE was as other described "Hollow". I wanted more sound and a more exotic sound so the Valved Rear section was the next logical step.

Valved system installed and it seemed at first that the original setup was louder, How can that be? I believe the thicker walled material of the SOUL system is directing the sound out the back vs. what the PSE did in resonating all directions. I keep telling myself it's got to be louder but the only increase I've noticed was a boomy drone where the previous PSE seemed to resonate/sing? I don't care about the drone, it is what it is and to be expected if you're messing with exhaust components but the lack of the singing sound was concerning. Then came an overpass... she sings. but Is it louder? I have no frigging idea!

It's the change in interior sound that has me confused because I feel it's actually quieter inside the cabin. I suppose that's a good thing.

Originally Posted by Mainiac

I had the same experience. Running the OAPs with valves disconnected and then added the valved system and it sounded quieter to me too. It's easier to talk in the cabin with the valved system, I know that much.

Originally Posted by HooosierDaddy

valves open (disconnected) on the soul valved exhaust and soul oap’s.

i am not running the resonated race exhaust.

Drone isn’t bad, but its there. Again I expect changing the factory components to introduce drone/resonance differently than oem.

Originally Posted by Goodwood

.............. For the meantime, going back to complete stock exhaust (with valve controller open). ...................... If that doesn't work, the next step would be to try the valved exhaust w/o the OAPs. A higher pitched exhaust note would be good! We'll see. Miss my 981 S's PSE!

Originally Posted by the_rider

So, you tried this: Controller + OAP? And, got drone with valves open under 4k? If so, have you tried plugging/completely disabling Sound Symposer? John is gonna experiment; but, couple of others have tried and seem to have concrete evidence; or, at least, that's how I interpreted. Sound Symposer is likely the bad actor in this specific scenario: valves open + under 4k. I sure hope so. If that turns out to be a red herring, then I would conclude, it is impossible to achieve a good, drone-free, traditional flat-six sound at civil volume in this gen. That would be a shame! However, I do realize that a lot of folks are happy with the stock sound or a combination of after-market options. So, there is that!

Originally Posted by Goodwood

Don't know if it's exactly drone, but it's an unpleasant sound to my ears in the low-mid range. John did mention the Sound Symposer, and how it's contributing to the unpleasantness I perceive. Not ready to go the route of disabling it just yet. Want to try the stock pipes w/open valves route first, and if that doesn't fit the bill, I will entertain disabling it. Right now, after being in the shop for pipes, controller, shifter, grills, then another for PPF, and still another for Ceramic. Tues it's back to the shop to put the stock OAPs back on. I just want to enjoy my car I waited so long for! Only have 400 mi on it so far!

Originally Posted by 2PUTT

looks like OG/MM has moved on to Dundon...sadly, i saw this coming.

Originally Posted by 2PUTT

looks like OG/MM has moved on to Dundon...sadly, i saw this coming.

Originally Posted by Soul Performance

Matt and I had the conversation before we ever began the project that he would go out and try as many systems as he can, and Dundon was of course on that list. While Matt's tastes change as his curiosity is never quite satisfied, it should be of no surprise to anyone he is off on the hunt again haha. Jamie over at Dundon is also a good friend and colleague in the industry, and deserves some time to shine in OG's Limelight as he was Matt's go to on the GT3s before we came bursting into the game years ago

Regards,
John Gaydos

Originally Posted by HooosierDaddy

I’d suggest giving the OAP’s a better chance before paying to change them back again. The car hasn’t even had its run in yet and you’ve not been able to fully experience the changes they offer. It’s your car though and the choice is up to you.

Originally Posted by Goodwood

Drove it this morning from PPF shop across town to Ceramic Coating shop. Opened the valves again, and this sound alone is not the sound I'm looking for. Yes, I only have 450 mi on the car, so still going through break in, but as mentioned previously, the great majority of my driving is in the off-idle to the 4k ish range. Sure, it sounds great when revved out, but that's not where I spend most of my time on the tach. Have yet to try the stock pipes with valve controller set to open, so that's what I'm doing next. Still have the Soul valved exhaust on order, and will decide if that's something I want to try next with the GPF in place. I do like the higher pitched tone it makes.

Originally Posted by pitt911

Just drove my car with soul resonated race exhaust
it seems the car woke up. It is more nimble , the engine seems to be revving smoother and it reminded me of a GT3 in a good way
on a negative note, there is a resonance/drone between 2-3 k rpm most prominent around 2400 rpm which can be annoying. Too early to judge but certainly is on the negative side