very minor drone @ 2-2.5K RPM - Mines a Manual , I just move to 3rd or 4th gear .

YES- all functions intact

 

Here's a great video from our friends at Flat 6 Motorsports featuring our Sport Cats, Sport Headers, and X-Pipe Exhaust.


-Mike

 

SOUL proudly supports adventurer @jeff.c.rhoades who has put over 200,000 miles on his 991.2 Carrera 4 all across the US - including 51 National Parks in 50 days!

His SOUL Sport Catalytic Converters have seen 200,000 miles of hard use while his SOUL Sport Headers have just over 150,000 miles on them with zero issues.


-Mike

 

"Test driving a 2017 Porsche 911 GTS / 7MT with Soul Sport Cats. Driven in Sport Mode. Recording via iPhone."


-Mike

 

I'm set on NA, but that 991.2 is a sweet ride. Those overrun noises sound like it's got an issue though. Maybe they can tweak the tuning to program them out... or add more. I'm team more aggressive sounds personally

 

regarding questions about cold start volume
(on 991.2 S cab with Soul Sport cats and Soul valved exhaust)

cold start is pretty f'ing loud (VERY serious unhappy face from wife when she was standing next to car one morning!!! "WHAT did you do to that thing?")
However, once the high idle drops, it's completely reasonable.
just FYI- I anticipated this and also installed a Cartronics 3-button controller so that I could "force valves closed at cold start" which is a dramatic improvement, especially as I often have to leave for work before the sun is up. What's interesting is that from inside the car, I often have a hard time telling the difference between valves open/valves closed (when warm)... but from outside the car, it's quite obvious. There is significantly more lower tones when open at idle and significantly louder at higher RPMs. Many times before pulling into the driveway, I will stop and cycle between valves open/valves closed just to make sure they are really closed (I don't trust the Cartronics controller.... but it always seems to work as it should) so that I don't upset the wife. (though she also called a tuned/modded Suby WRX with very loud cat-back exhaust that I had, "Chitty Chitty Bang Bang," as you could hear it coming 1/4 - 1/2 mile away! So I was a bit sensitized to this issue.)

I think the Soul system sounds "perfect" -- but it was critical I could switch between "look at me with my ear-to-ear grin" and "pseudo-stealth" modes. I really didn't want to be "that guy" driving through the neighborhood, waking the kids, setting off car alarms, and making all the dogs bark. I replaced the stock, non-PSE system and am completely satisfied. Especially when running hard in Sport+ mode on the mountain roads, it sounds amazing. A dramatic improvement over the stock setup.

 

I was chatting with Charles at M-Engineering earlier today. He said specifically that he can completely turn off that cold start feature on your car as part of the tuning package they offer

https://soulpp.com/product/porsche-9...ing-ecu-tunes/

Regards,
John Gaydos

 

Thanks, John. I was actually aware of that, and it was one of the things I considered when looking at the tune options. My understanding is that "cold start" (higher RPMs) was designed primarily to heat the cats up faster for improved emissions (like so many of the parts/engineering and tuning characteristics of the stock "normal mode" setup- minimize emissions to meet gov't regs). After considering the various options, I ultimately chose the Softronic tune. I don't know that there is a "right answer" regarding tunes, but Softronic seems to be the "people's choice" after reading through dozens of threads. It may not be the most flexible or the most aggressive, but everyone seemed happy with it, and it certainly appeared "safe" based on so many users. M-engineering was perhaps my 2nd choice, but I didn't need map switching, and it "seemed" slightly more aggressive. Having said all that, I've been very happy with the Softronic tune over the past year and love how the car runs. It would certainly be interesting to be able to have both and A/B them. I would suspect that the difference, while possibly measurable on a dyno, would be minimal on the butt dyno. Especially for a daily driver that is not tracked - on an island with no "track" options- and absurdly low speed limits (jail speeds in 2nd gear). (as an aside, I just drove 1000+ miles in Tasmania and amazed at how good their roads were and how high their speed limits were! Most were 10-20 mph higher than similar roads in Hawaii. A 2-lane highway often had a speed limit of 110 kph (68 mph) where the identical road in Hawaii is 45-55 mph!!!

I also LOVE my Soul Sport cats and valved exhaust setup. I still need to get a friend to drive past me at redline so I can hear what others hear, but I've even had folks at stoplights comment on how good it sounds (it's a cab and I have the top down 99.9% of the time). I am surprised, though, that the exhaust actually sounds "better" with the top UP (less wind noise, I suppose).

Thanks for designing such a great system.
Norm

 

Hello Norm,
Thanks for the input and glad you're still going strong a year later Cold start also does a bit more than cat preheating yet there was another thread that went into that...

Semper Fi!
Scott

 

Great to hear you're already tuned and running Softronic. Scott certainly knows his stuff and I epxect you'll continue enjoying his software as much as the exhaust setup. Awesome that you're out there getting some really high quality mileage on your car, can't imagine ripping a Porsche in Hawaii and then comparing that to Tasmania haha.

 

Habibi Motorsports just completed a 991 GTS build with SOUL Valved Exhaust System, SOUL Sport Catalytic Converters, TiAL Turbo Kit, and Garrett Intercoolers.


-Mike

 

@Soul Performance outside of the aesthetics, are there any differences between the pse vs non pse valve version of your exhaust? Does one sound better / different than the other?

 

Yes indeed, the PSE and Non PSE equivalent systems have very different packaging constraints. This leads to different valves closed and open flow paths, so there are tangible differences between the two. It's a bit of an intricate comparison and really best for a phone chat. We can also review your goals at the same time and figure out which way is best to pursue, and which products or combinations of them would be a fit for you. My cell is 4848836197, give me a shout when you some time to spare and I'll get you up to speed

Regards,
John Gaydos

 

@Soul Performance I know yall are 1st and foremost an exhaust company, but have yall considered making inlet piping and turbo elbows for the 991.2 cars? I know tial makes some in 3d printed metal but I would assume a composite (plastic) set up with larger pipes and better radii could make similar gains while costing the consumer far less as well as less overhead for the manufacturer. I know I could justify spending the money on some if they weren’t $2500 for a couple pipes. I do understand there’s a bit more to it than that with manufacturing and r&d, but just a thought.

 

We're not opposed to anything...we'll add it to the list of considerations for our R&D team!

-Mike