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Soul Performance Products - 991.2 Development Thread

 
Old 09-28-2017, 06:13 PM
  #61  
J.Ho
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Originally Posted by Soul Performance View Post
Sticky,

The Sport Catalytic Converters are a great balance that will provide you with a great sound, nice increases in power and throttle response while drastically reducing the smell. Unless you are under WOT no one behind you would be the wiser. We also use the OEM heat shielding which would help during visual inspections if you opt to keep them on during emissions time.

We developed a prototype 991.2 x-pipe (PSE replacement) and found that while it sounded great it lost about 8hp compared to the PSE. It did sound better but with the combination of the PSE muffler being very good, making great power and the x-pipe eliminating the functionality of the valves and losing power, we have decided not to pursue and x-pipe PSE replacement at this time.

I think you will be very pleased with the Sport Cats and the PSE in terms of both sound and performance. Let me know if there are any other specific questions I can help with, you can contact me at my direct contact info below anytime.

Evan Fiorentino
Soul Performance Products
P: (267) 818-3203
E: [email protected]
I can attest to the above. The x-pipe was developed for me.. It sounded amazing except it shook the entire neighborhood on the cold start. It defintley felt like it needed backpressure of some sort and was more laggy. With just the Soul Sport Cats installed and my PSE muffler, I can feel a noticible difference and the turbo's sound more agressive and meaner.. you can hear me coming now. It's also a little more crackly in sport mode, a little more aggressive sounding, but not too much more than the normal PSE. I'm real happy with my Soul sport cats and now can say I'm "done" with my exhaust!
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Old 09-28-2017, 09:05 PM
  #62  
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Originally Posted by Soul Performance View Post

I think you will be very pleased with the Sport Cats and the PSE in terms of both sound and performance. Let me know if there are any other specific questions I can help with, you can contact me at my direct contact info below anytime.

Evan Fiorentino
Soul Performance Products
P: (267) 818-3203
E: [email protected]
You mentioned earlier in the tread that you warrantee the sport cats. Does this include use while tracking the car? I bring this up as myself and others have melted HJS cats during HPDE events.
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Old 09-28-2017, 09:06 PM
  #63  
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Originally Posted by Soul Performance View Post

I think you will be very pleased with the Sport Cats and the PSE in terms of both sound and performance. Let me know if there are any other specific questions I can help with, you can contact me at my direct contact info below anytime.

Evan Fiorentino
Soul Performance Products
P: (267) 818-3203
E: [email protected]
You mentioned earlier in the tread that you warrantee the sport cats. Does this include use while tracking the car? I bring this up as myself and others have melted HJS cats during HPDE events ( not on a 911 though).

I really liked them, more power, no smell, etc. Just afraid they wont last more than 10 track days......
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Old 09-29-2017, 12:12 PM
  #64  
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Originally Posted by arter View Post
You mentioned earlier in the tread that you warrantee the sport cats. Does this include use while tracking the car? I bring this up as myself and others have melted HJS cats during HPDE events ( not on a 911 though).

I really liked them, more power, no smell, etc. Just afraid they wont last more than 10 track days......
We offer a 3 year warranty on catalytic converters themselves.

Using leaded race fuel or any type of fuel additive voids the warranty on the catalytic converters - they simply aren't designed to withstand that abuse.

We know there are owners who don't want to run catless components yet still want to enjoy their cars on track days. We know there is the potential for catalyst failure during track use and we are prepared to support our customers and let them enjoy their components enthusiastically (and responsibly).

We will repair or replace the catalytic converters once if they fail from extreme use (internal failure). After the second failure, it is evident that the car is being used under extreme circumstances - outside of the range of life of ANY catalytic converter - and that point we will offer credit towards an equivalent catless product. We think that is more than fair without leaving our customers without a solution.

If the situation presents itself where the car is being used for double duty and significant track use (I'd consider 10 track days to be getting there)- we'll take care of customers so that they can own both street and race variants which can be swapped out akin to running more aggressive brakes and tires on track.

We hope everyone finds that fair!

-Mike in Marketing
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Old 09-29-2017, 12:19 PM
  #65  
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Originally Posted by Soul Performance View Post
We offer a 3 year warranty on catalytic converters themselves.

Using leaded race fuel or any type of fuel additive voids the warranty on the catalytic converters - they simply aren't designed to withstand that abuse.

We know there are owners who don't want to run catless components yet still want to enjoy their cars on track days. We know there is the potential for catalyst failure during track use and we are prepared to support our customers and let them enjoy their components enthusiastically (and responsibly).

We will repair or replace the catalytic converters once if they fail from extreme use (internal failure). After the second failure, it is evident that the car is being used under extreme circumstances - outside of the range of life of ANY catalytic converter - and that point we will offer credit towards an equivalent catless product. We think that is more than fair without leaving our customers without a solution.

If the situation presents itself where the car is being used for double duty and significant track use (I'd consider 10 track days to be getting there)- we'll take care of customers so that they can own both street and race variants which can be swapped out akin to running more aggressive brakes and tires on track.

We hope everyone finds that fair!

-Mike in Marketing

Thanks, I may give them a try again when my car gets delivered
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Old 09-29-2017, 02:18 PM
  #66  
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I've never used any type of sport cats in the past...just kept the stock cats on my cars. I've done a lot of track days in 997 cars and never an issue melting or destroying the stock cats.

So my questions are...

How are stock cats more durable than 200 cell sport cats?

What fuel additive hurts cats?

I only use 93 octane from the Shell station outside the track (Sebring) or other tracks I go to there is usually a gas station near the track. However the gas sold at my tracks is unleaded 93.
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Old 09-29-2017, 02:32 PM
  #67  
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Originally Posted by mdrums View Post
I've never used any type of sport cats in the past...just kept the stock cats on my cars. I've done a lot of track days in 997 cars and never an issue melting or destroying the stock cats.

So my questions are...

How are stock cats more durable than 200 cell sport cats?

What fuel additive hurts cats?

I only use 93 octane from the Shell station outside the track (Sebring) or other tracks I go to there is usually a gas station near the track. However the gas sold at my tracks is unleaded 93.
Great questions! The stock cats use a much higher CPI (cells per inch) catalytic converter. While most sport cats are 200 cells, the stock cats are in the order of 600+ in most cases. That translates into a catalytic converter with a much larger surface area to handle the emissions of the combustion process making the catalytic converter more durable over a longer period of time, after all there is an 8 year warranty on factory supplied emissions equipment.

The downside of that is the greatly reduced flow and muffled sound. The 200 cell Sport Cats are a great alternative that remain emissions compliant while freeing up some great sound and power. Some owners may experience Sport Cat failure after a multitude of hard track driving due to the inability of the relatively small surface area of the 200 cell catalytic converter to handle the much higher temperatures and emissions.

Regular 93 octane fuel is just fine to use at the track with the cats. When we reference fuel additive we are speaking of octane boosters or high octane fuels like Cam2, 100 octane etc.

The reason for that is when using certain fuel additives and/or high octane fuels your EGT could spike above service levels, or they could actually wash the chemical coating off of the matrix all together.

Hope this helps.

Best,
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Old 09-29-2017, 02:54 PM
  #68  
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Fuel additives that hurt cats are octane enhancers that contain MTT and the like. Theyb poison the Pb/Pt so that the smell will come back ( they dont melt anything).

sport cats can have a weaker matrix than stock ( 600-800 cell) cats. The heat can cause them to melt. Correct ( larger) sizing can reduce the heat. My knowledge of sport cat issues is with cayman / GT4 header units not 911 sized ones.

(edit, didnt see the Soul answer when I wrote this, but agree)
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Old 09-29-2017, 03:52 PM
  #69  
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Originally Posted by arter View Post
Fuel additives that hurt cats are octane enhancers that contain MTT and the like. Theyb poison the Pb/Pt so that the smell will come back ( they dont melt anything).

sport cats can have a weaker matrix than stock ( 600-800 cell) cats. The heat can cause them to melt. Correct ( larger) sizing can reduce the heat. My knowledge of sport cat issues is with cayman / GT4 header units not 911 sized ones.

(edit, didnt see the Soul answer when I wrote this, but agree)
That is why we use the larger "911" sized cats on all of our current product offerings, including the GT4 Street Headers
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Old 10-02-2017, 12:04 PM
  #70  
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Thank you member "texascarlover" for ordering a set of 991.2 (with PSE) Sport Catalytic Converters! Anyone else have any additional questions I can help with?

Evan Fiorentino
Soul Performance Products
P: (267) 818-3203
E: [email protected]
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John Gaydos - Performance Specialist

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Cell - (484) 883-6197
[email protected]

Mike Spock - Marketing Manager
Office (855) 486-1400
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Old 10-03-2017, 01:44 PM
  #71  
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Is SOUL looking into or planning to develop headers for the 991.2? I ask this after seeing someone else's dyne sheets: it looks like headers made a bigger power gain than the 200 cell cats (which was kind of surprising until I saw the design of the stock headers).

Just curious,
John
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Old 10-03-2017, 03:18 PM
  #72  
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Originally Posted by johnstoy View Post
Is SOUL looking into or planning to develop headers for the 991.2? I ask this after seeing someone else's dyne sheets: it looks like headers made a bigger power gain than the 200 cell cats (which was kind of surprising until I saw the design of the stock headers).

Just curious,
John
John, thank you for asking. We do not plan on offering headers for the 991.2 in the near future. We believe that there is power to be had by increasing the efficiency of the headers as there is certainly room for improvement over the design of the 991.2 pieces. Upgraded manifolds help in the high RPM range due to their increased efficiency, but by increasing the volume inside the headers it can negatively impact spool time - and this has been brought to our attention by more than one customer / associate of ours. If we did offer headers we would consider 321 stainless as the material of choice - and that's where we'd like to be headed in the future. Changing the catalysts should increase power without negatively impacting spool as they are post turbo, power with no compromise.
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Old 10-05-2017, 03:36 PM
  #73  
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Fabbing up another Trackback Turbo Back Exhaust



We're considering keeping one on hand as a part of a rental program to anyone who wants to a track oriented system for a track day but can't necessarily justify having it on at all times. Pay in full and then get refunded when we receive it back. If anyone is interested let us know.

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Old 10-07-2017, 08:06 PM
  #74  
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Installed a B&W air filter and my new Soul Cats in 2018 GTS today. What a b1tch that was! Anyway I got it all done and all screws back in the same spot they came from and not one error (scratch etc.). Fired it up and it sounds much much better. Feels more ferocious! Tomorrow the Musicar tweeters go in. So far so good but I will say the install of the cats was more involved than I anticipated and certainly more so than the instructions suggest. I had to buy a number of tools and take the muffler to muffler shop to expand the openings to get the cats on. All in all rewarding but I am beat!
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Old 10-08-2017, 01:19 PM
  #75  
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Originally Posted by texascarlover View Post
Installed a B&W air filter and my new Soul Cats in 2018 GTS today. What a b1tch that was! Anyway I got it all done and all screws back in the same spot they came from and not one error (scratch etc.). Fired it up and it sounds much much better. Feels more ferocious! Tomorrow the Musicar tweeters go in. So far so good but I will say the install of the cats was more involved than I anticipated and certainly more so than the instructions suggest. I had to buy a number of tools and take the muffler to muffler shop to expand the openings to get the cats on. All in all rewarding but I am beat!
How much louder would you say it is? Do you feel it is aggressive enough now?

I'm pretty much going to copy you. I have the same filter.

Also going to order up those tweeters and would like to hear your feedback.
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