Soul Performance

Hey Brian, you might want to try taking out or plugging the sound symposer, we've had some good feedback that this can take the edge off some cabin presence in the car.

Regards,
John Gaydos

Soul Performance

Sound is subjective, bit we've had reports from more than a few individuals that replacing the factory OAPs resulted in less resonance in cabin. Give it a try, and if you don't like it call me and we'll work it out. We're not going to have you keep something on the car if you put it on and your first impression is "OMG what did I do?" and it doesn't get better from there haha. That's not how we roll as a company

Regards,
John Gaydos

Soul Performance

Also for what it's worth, we do have a Valved Exhaust System that pairs very well with our over axle pipes options. Don't think we don't have you covered with a muffler option too if anyone is in the market to change out their setup and would consider giving us a try

IL_Pete

PSA on a Part-Out of my recently traded Boxster 25 - 3 of 5 of the parts are featured here on this thread, the JCR Silenced Valved Race Exhaust, the CG High Flow Filter (Shielded) OAPs, and the Soul Performance Resonated OAPs. (Plus a Numeric Shifter and a Windschott Rear Wind Screen.)

Part-Out Listing

The JCR Exhaust is epic, the best IMO if you are just doing the rear exhaust or a rear exhaust and OAPs. The best Motorsport "Tone" I have heard in any exhaust on a 718 4.0.

Comparative comments between the two OAPs listed for sale - both are fantastic with the JCR Exhaust, or I would imagine with any aftermarket exhaust. Both provide for a good compromise between Stock OAPs with the OPFs and Wide Open OAPs. The Wide Open OAPs can create too much Bassiness/Drone, IMO. The above two OAP options provide for less Bassiness/Drone, with still some increased volume and Butt Dyno increase in Torque/HP, that feeling of increased pull at high RPMs. Both are really good in that regard. The Soul Resonated OAPs are a little louder and more Motorsport sounding (really good!), while the CG ones still sound great and add some volume, and create a little less Bassiness than the Soul ones do. I found the Bassiness quite tolerable with both, and did not find Wide Open OAPs to be as tolerable.

I thought of keeping both the B25 and the GT4, but it just didn't make economic sense to me to have two cars so similar, especially with just getting the Macan for the Winter/Family/DD vehicle. I am going to run the Kline Exhaust plus OAP setup on the GT4, and add Headers and a Tune, to optimize for HP and Torque for the track. The JCR would be pretty ballistic with that setup, I would fear that it would be too rambunctious for the street driving with the GT4 - the Kline can be more chill at lower RPMs, and more so with the Valves Closed, even with Headers, from what other people say that have that setup.

But for Exhaust + OAP with Stock Headers, the JCR rules the Roost for that. The Kline sounds good at higher RPMs (not quite as good as the JCR IMO though), but is much more pedestrian at lower RPMs, sub 4,000, even with the valves always open with a VC.

(I have been teased at the track that my Boxster sounded better than my GT4, and that it makes no sense to people as to why that is. The Headers should address that! )

-Pete

IL_Pete

Wow, that was quick with regards to the Part-Out Sales! The JCR Exhaust, the Soul OAPs, the Numeric Short Shift and the Windschott Rear Wind Screen all sold yesterday.

The Cargraphic High Flow Filter OAPs are still available. They are terrific - I would recommend them very highly, particularly for a Cayman with an aftermarket exhaust. With the hardtop of a Cayman, an exhaust plus Wide Open OAPs can be over the top with regards to that Drone/Bassiness in the troubled RPMs, but just an exhaust didn't for me add enough exhaust volume and "pull" (Torque/HP). The CG was a great balance, adding sound volume and tone to the exhaust (in my case the JCR), and adding a significant amount of Butt Dyno feel of pull at the higher RPMs, while still being quite manageable in the Drone/Bassiness. The "Goldilocks" of OAPs in that regard.

Avera

It seems that the trial, error and turnover rate for aftermarket exhaust parts are through the roof in this GT4/Spyder community . . . I contributed my part

Little reason to buy new given the abundance of slightly broken-in parts on the market . . . good for owners

Avera

gridlock61

Reviving an old thread, it took me a couple of hours to get through it, but provided a lot of great info!

I recently installed the JCR silenced back end exhaust. Little did I know that the 2020 Spyder I bought (I bought it used) already had Fabspeed OAP's. The sound was incredible, but just a bit too much drone in the low-mid revs. I found a set of stock OAPs which I installed and unfortunately lost a bit too much vs the Fabspeed OAPs as far as the scream at high revs and the pull to redline. I am now looking at aftermarket 'silenced' OAPs to pair with the JCR rear exhaust, which includes Soul, Cargraphic, and JCR. Anyone tried the JCR catted OAPs and paired that with the JCR or other exhaust? Any opinions on the JCR vs Soul vs Cargraphic 'silenced' OAPs? I'd like to have something in between the straight OAP's and stock paired with the JCR exhaust, which reduces the high RPS scream and top-end power a bit too much.

Thanks!

flynlo

Keep us posted. I know that JCR sounds great but not loud enough. And crazy drone with a straight OAP. Hopefully it works out for you.

mprog

Reviving an old thread…

Decided to not wait any longer for the JCR silenced OAP. It has been a few years, but I’ll say Jonny is always great to work with.

My shop ordered the Soul resonated OAP, and we are waiting on the ceramic heat shielding to get installed, then we will mate them to my JCR silenced valved rear section and see how it is! Stay tuned.

gridlock61

Curious what you mean about not waiting for the JCR silenced OAP. It's my understanding that they are available: https://jcr-developments.com/product...ipes-race-cats

I have the Soul resonated OAP along with the JCR silenced rear section. Although the resonated OAP did somewhat reduce the low-mid RPM drone, it was not enough in my opinion. It also has an odd hollow like sound in that RPM region, which I don't particularly like and don't remember experiencing when I had the Fabspeed OAP, although that configuration was a bit over the top in overall volume. I'm now considering either going back to the stock OAP and retaining the JCR rear section, or trying the JCR silenced OAP. I still hope to find a setup that has a more pleasing, less droney sound at low-mid RPM, while allowing that glorious high pitched sound at higher RPMs.

mprog

That’s their catted OAP, intended to be used with their headers to provide a catted solution (since stock headers have the cats right after the collector)

their silenced OAP is under development, utilizes a resonator like the Soul one, and Jonny doesn’t know when they’ll be ready.

Westcoast

This is a configuration that could be interesting, I have a JCR silenced Race Pipe and always wondered what a resonated OAP would do for the sound and any drone suppression. Looking forward to the feedback.

mprog

I’ve asked around, reported results are incredibly diverse. Sounds amazing, no louder than JCR itself for normal driving , to way too loud and boomy.

so I figured I gotta try for myself 😀

tigerhonaker

My opinion is you will really like the SOUL ceramic coated OAP.

I have it on my 2021 GT4 W/PDK and it sounds Awesome !!!

Terry

SpydrGuy

I tried the Soul ceramic coated resonated OAPs with the JCR silenced exhaust on my Spyder. I kept it less than 2 weeks, then reinstalled the OEM OAPs. My biggest complaint was the drone at 2k RPM that was obnoxious. However, in addition to being considerably louder with the resonated OAPs, the exhaust note was noticeably raspier. I much preferred the clean sounds of the JCR with OEM OAPs. Every time I drive the car it brings a smile to my face. Who needs a radio?