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SOUL | 718 GT4/Spyder Exhaust Development

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Old 01-05-2021, 09:16 PM
  #616  
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Originally Posted by Jim Rockford
This just went up. Haven’t watched full video but the sound clip at the beginning sure sounds promising

https://youtu.be/yVQq5nfgliQ
Originally Posted by tigerhonaker
I have watched a lot of the Obsessed Garage videos on the GT4.
Many of his videos are interesting.
They cover everything from him taking delivery, Highly-Detailing It, then his drives in it, then him doing the changes/modifications to it and there are quite a few of those as well as him trying lots of exhaust options.
Worth checking into guys.
Type in "Obsessed Garage GT4" on You-tube.

Terry
Matt has been a pleasure to work with. I just sent him a voice message of me giggling watching his last video he just put up haha. Skip to about 5:55 and leave it on loop with some good speakers

Regards,
John Gaydos

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Old 01-05-2021, 11:03 PM
  #617  
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Any update on the catted headers?
Old 01-06-2021, 01:14 AM
  #618  
MEM82
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Great video.
Super excited to run my race exhaust and race headers combo
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Soul Performance (01-07-2021)
Old 01-06-2021, 10:48 PM
  #619  
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Originally Posted by MEM82
Great video.
Super excited to run my race exhaust and race headers combo
wow that’s going to be loud.

Matt said it’s only for crazy persons but unfortunately didn’t post a video ☹️
Old 01-06-2021, 10:49 PM
  #620  
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Originally Posted by frosty911
wow that’s going to be loud.

Matt said it’s only for crazy persons but unfortunately didn’t post a video ☹️

Guess I'm in the crazy person category......
Old 01-06-2021, 10:53 PM
  #621  
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Originally Posted by jmartpr
Guess I'm in the crazy person category......
I am crazy as well!
Old 01-06-2021, 11:01 PM
  #622  
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Aren't all Porsche drivers a little bit crazy? 😜
Old 01-06-2021, 11:17 PM
  #623  
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Originally Posted by frosty911
wow that’s going to be loud.

Matt said it’s only for crazy persons but unfortunately didn’t post a video ☹️
yeah I was a bit sad about that since I wanted to see what that config sounded like with his level of production.
Old 01-07-2021, 12:36 PM
  #624  
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Originally Posted by Poupon McArr
yeah I was a bit sad about that since I wanted to see what that config sounded like with his level of production.
I’ve tried a different set up on my Spyder, stock headers + Akra OPF delete + JCR non silenced race exhaust.
Sound quality above 5000rpm was AMAZING and very loud. Sound between 2000 and 4000rpms was very drony. It was too much for me, for my neighbors and for my wife.
I also felt a significant torque improvement across the rpms.
In your shoes I would start with Soul OPF delete + Soul valved Xpipe exhaust + Valve controler
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Foggy916 (01-07-2021)
Old 01-07-2021, 12:45 PM
  #625  
Larry Cable
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Originally Posted by DocMo
I’ve tried a different set up on my Spyder, stock headers + Akra OPF delete + JCR non silenced race exhaust.
Sound quality above 5000rpm was AMAZING and very loud. Sound between 2000 and 4000rpms was very drony. It was too much for me, for my neighbors and for my wife.
I also felt a significant torque improvement across the rpms.
In your shoes I would start with Soul OPF delete + Soul valved Xpipe exhaust + Valve controler
I'd recommend a "one change at a time" approach - change 1 variable and then evaluate the effects of that change ... its more of an experimental approach that allows the observer to isolate the
pro's and con's of a particular modification... YMMV

The only reason I would deviate from this approach would be cost optimization of the changes... e.g if I was replacing a clutch I would probably do a LWFW and LSD change at the same time
due to the cost of R&R of the transmission.
Old 01-07-2021, 01:59 PM
  #626  
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Originally Posted by DocMo
I’ve tried a different set up on my Spyder, stock headers + Akra OPF delete + JCR non silenced race exhaust.
Sound quality above 5000rpm was AMAZING and very loud. Sound between 2000 and 4000rpms was very drony. It was too much for me, for my neighbors and for my wife.
I also felt a significant torque improvement across the rpms.
In your shoes I would start with Soul OPF delete + Soul valved Xpipe exhaust + Valve controler
Deleted, sorry my comments were only about the non-Soul pieces, not for this thread.

Last edited by Westcoast; 01-07-2021 at 02:01 PM.
Old 01-07-2021, 02:22 PM
  #627  
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Originally Posted by Larry Cable
I'd recommend a "one change at a time" approach - change 1 variable and then evaluate the effects of that change ... its more of an experimental approach that allows the observer to isolate the
pro's and con's of a particular modification... YMMV

The only reason I would deviate from this approach would be cost optimization of the changes... e.g if I was replacing a clutch I would probably do a LWFW and LSD change at the same time
due to the cost of R&R of the transmission.
Larry,

I second your one-piece at a time approach. Have had the Soul OPF Delete pipes on for about 1000 miles and am completely satisfied. I won't be doing any other modifications.

The stock PSE programming doesn't bother me -- if I'm just running around town or en route to the hills valves closed below 3800 is perfect.

I think you'll find the range above 3800 quite satisfying, above 6000 it's quite spine tingling.

Shaggy
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bwhip (01-07-2021)
Old 01-07-2021, 02:26 PM
  #628  
Poupon McArr
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I already jumped in the deep end and have the race exhaust coming. We'll see if I'm happy with that decision later I guess
Old 01-07-2021, 02:50 PM
  #629  
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Originally Posted by TXshaggy
Larry,

I second your one-piece at a time approach. Have had the Soul OPF Delete pipes on for about 1000 miles and am completely satisfied. I won't be doing any other modifications.

The stock PSE programming doesn't bother me -- if I'm just running around town or en route to the hills valves closed below 3800 is perfect.

I think you'll find the range above 3800 quite satisfying, above 6000 it's quite spine tingling.

Shaggy
This is great to hear! Excited to get the car out in the spring with OFP deletes. Hopefully, this (and valve controller) will be enough for me.
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Old 01-07-2021, 04:45 PM
  #630  
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Originally Posted by Porsche444
If there's one thing I didn't like about the GT4 is the sound, its just a bit whiny. So, after doing research and picking the best in the industry, I had these installed on Dec 30th and managed to put about 250 mountain carving spirited miles on the car and just WOW!!! At startup, you can just hear the difference, gotta be 30-40% louder and once you hit about 4k+ rpm, this car sounds SO DAMN GLORIOUS!!!!, its is the icing on the cake. Its so much deeper/richer with sound now, its now crackling/popping and making sounds it didn't before, so it released something within the beast. And i'm not sure if its my mind playing tricks, but i swear it has increased the torque by 10-20, because the car feels faster, just has that extra little punch.

https://soulpp.com/product/porsche-7...er-axle-pipes/

Cant say enough good things about John Gaydos at SOUL, shout out to him and his amazing team, thanks John!!
Thanks very much for posting your feedback my friend! It has been a pleasure working with you, and I look forward to keeping in touch as you get more seat time

Originally Posted by horns
Any update on the catted headers?
We hope to start round two of development on the catted headers in about 2-3 weeks : )

Originally Posted by frosty911
wow that’s going to be loud.

Matt said it’s only for crazy persons but unfortunately didn’t post a video ☹️
Originally Posted by jmartpr
Guess I'm in the crazy person category......
Originally Posted by MEM82
I am crazy as well!
Originally Posted by Porsche444
Aren't all Porsche drivers a little bit crazy? 😜
Originally Posted by Poupon McArr
yeah I was a bit sad about that since I wanted to see what that config sounded like with his level of production.
Scrolling back a ways there is the video compilation from Compguy36 of the Competition Headers/Race Exhaust to give you guys a tease of what to expect. Certainly not Obsessed Garage level of production, but it portrays the level of the insanity pretty well haha.

Regards,
John Gaydos





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