808c2s

I think you're thinking JCR? The Dundon one for the GT4/Spyder is $9k for headers and Hi-Flo Cats where the OPFs were. Even with installation it's not $18k.

ltfl09

9k for headers and OAP is kind of ridiculous. Don't know how much their rear section will cost, probably around 5-6k is my guess. $14-15k. 10% of the car isn't reasonable in my opinion

mjw930

Yep, this is completely insane. There is absolutely no excuse an exhaust as simple as this to cost more then $5K in it's entirety and even then it's really hard to justify for better sound and subjectively better performance.

JCR-Porsche

If you can supply me Inconel 625 Manifolds / Inconel 625 OPF deletes with HJS 200cel cats & Thermisol heatshielding along with Titanium Asnex rear silencer replacement built to the same exacting standards as our parts for $5000 USD ill buy 100 sets today.








JC

TXshaggy

Soul OAP GPF delete with factory PSE. One and done, I love it!

sraj

Would love to hear more, as I am considering the same modification. Volume/character of sound? Drone levels as compared to stock OAP? Any downsides? Thanks!

kyrocks

I just did Akrapovic link pipes and unplugged the valves. That’s it. $1700.
Titanium and heat shield included.
It has transformed the car for me. Was considering full system, but decided to just start out with link pipes. I like loud and it’s more than loud for me with the top down (spyder). It is perfect. A lot of other systems will make the floor board or center console vibrate and I hate that. This is perfect for me.
People will have different opinions, but I suggest you start with the link pipe and go from there.

TXshaggy

No drone. Marginally louder below 3800 RPMs; which is fine as I'm not interested in constant noise in lower RPM situations. Above 3800 quite glorious, 6000-8000 it's a guttural howl.

I also have no interest in making the 4.0 sound like the previous 3.4/3.8 -- celebrate the 4.0.

Soul fitment, finish, and support excellent as well.

sraj

Thanks! So you have factory valve control, no override? Did you ever consider Akra for the advantages stated above by kyrocks?

mjw930

Let me be more clear, I don't doubt you have a significant investment as well as high material expenses and a quite small potential customer base that all contribute to your price. I didn't mean to denigrate your product, it's quality or it's performance. My statement was and is based on what the value of an exhaust system on a street car is for ME.

frmmrs

I am thinking about the race exhaust also on my spyder. Is the drone and loudness a bit mush for long highway cruises where you are sitting in 5/6th at 2500- 3000 rpm?
Trying to decide if should just unplug the PSE and add OAP vs the race exhaust - saw your review , dont find the valved versions worth the extra$ when the race seems to have the best overall performance. Also any comment on additional power feel?
Thanks

TXshaggy

Yes, factory PSE -- no over ride.

No I didn't consider Akra. Once you remove the GPF and restriction temps are reduced naturally via scavenging. I've seen the "test" done by an OPF supplier that says non shielded delete pipes are 10F or so hotter but I usually only trust 3rd party testing and in the grand scheme of temps 10F is insignificant if true.

There is a valid reason for the stock piece to be shielded -- the GPF is a huge restriction and self cleans like your home oven.

Previous gen OAPs shielding never discussed so there is that.

vince993tt

I have the same setup (Akra slip-on and link pipes, with oem valve control), and my answers to the questions are essentially the same as rzspyder's as well. Very satisfied, and no drone of any consequence (you can induce a bit of it around 4k rpm and light throttle with the top up, but I would very rarely encounter that). As rzspyder indicates, it is not a true x-pipe, but there is a "sound tube" connection between the two banks in that center portion of the slip-on unit, and to me, it has the motorsports type sound I am looking for. Very happy overall, and I feel that I made the right decision. I wanted a refined, not super loud system with essentially no drone that included a real Porsche motorsports sound/tone, especially in the 6-8k range, and this system provides that for me.

usctrojanGT3

How restrictive is the muffler after the OAP? I'm thinking maybe I do the OAP pipes with catless headers so that the sound is slightly louder at lower RPMs but then is nice and loud WOT above 4k RPM (like it was when I ran catless headers with the OEM exhaust on my 981 GT4).

Foggy916

I have the race resonated version on my Spyder. For me, I do not find the drone that bad with top down. Top up, it's more noticeable but I rarely drive top up. Doesn't bother me on the highway. You will definitely feel a power (hp and torque) increase. If it was me and I had the extra $, I would take a closer look at the newer valved version since you get nearly the same sound and performance of the race version but the benefit of using the PSE and valves to tame the drone. However, if you don't mind a little drone with the top up, you can't beat the value and simplicity of the race version. Not sure where you're located but see if someone might be willing to give you a demo....I'm in north Dallas and am willing to offer a listen to a fellow RL.