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SOUL | 718 GT4/Spyder Exhaust Development

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Old 12-13-2020, 06:53 PM
  #556  
TXshaggy
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Originally Posted by jmartpr
This dyno confirms what JCR had also found....I'm really surprise a N/A Porsche engine could gain so much from a cat-back exhaust. +30 hp for $2,600 is a no-brainer if you don't mind the volume and a bit of drone.
You are basically knocking on 450 hp (engine).....if you add race headers that could be an additional good 15 hp and you still haven't done a ECU flash or COBB AP.
I’m going to venture a guess that just removing the GPF yields significant gains...the rest is sound/tone management. GPF is essentially another full pair of cats...perhaps even more restrictive.

Originally Posted by Mojonito
where in south Texas?
Texas Hill Country North of SA.
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Old 12-13-2020, 07:40 PM
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Cats look like 600-800 cell they are prolly more restrictive than opf
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Old 12-13-2020, 07:46 PM
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I am on the fence about dumping the GPF pipes.

It appears that there are a good number of people in Texas with these cars.

Anyone in Houston willing to meet to compare the various exhaust configurations?
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Old 12-13-2020, 08:46 PM
  #559  
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Originally Posted by Rennolazine
Cats look like 600-800 cell they are prolly more restrictive than opf
Pretty restrictive...unknown what the cell equivalent is, but man that is corked!







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Old 12-13-2020, 10:47 PM
  #560  
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Originally Posted by rahtid
I would like to hear this drone, I don't think the volume would bother me since I'm already used to my GT350R which has become my benchmark for exhaust sounds. However the GT350R doesn't have a drone at all. The race exhaust will put it near the GT350R level but would like to hear this drone before I pull the trigger.
I miss my GT350 with resonator delete (equals GT350R exhaust) and I agree about the "benchmark"!
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Old 12-14-2020, 02:02 AM
  #561  
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Did any of you guys order the race exhaust with tips? If so, which ones....the slant cut or the straight cut?
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Old 12-14-2020, 10:06 AM
  #562  
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Originally Posted by usctrojanGT3
Did any of you guys order the race exhaust with tips? If so, which ones....the slant cut or the straight cut?
I ordered the slant in signature satin for my race exhaust. I believe that is what he has pictured on the black GT4. Haven't arrived yet.
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Old 12-14-2020, 12:29 PM
  #563  
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Originally Posted by Foggy916
I ordered the slant in signature satin for my race exhaust. I believe that is what he has pictured on the black GT4. Haven't arrived yet.
I did the same
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Old 12-14-2020, 12:52 PM
  #564  
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Yeah I was looking at the slant cut ones too but didn't know whether to go with the signature satin or matte black.
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Old 12-14-2020, 02:31 PM
  #565  
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I'm going single wall, straight, in matte black when they're available
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Old 12-14-2020, 02:54 PM
  #566  
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Originally Posted by usctrojanGT3
Yeah I was looking at the slant cut ones too but didn't know whether to go with the signature satin or matte black.
I had the same internal debate. I ended up on the note that I like the greater contrast to the diffuser with the signature satin finish
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Old 12-14-2020, 06:51 PM
  #567  
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Hey Guys,

We got some more exhaust clips today from Compguy36 of him running our Competition Headers with our Race Exhaust. It is ANGRY!!


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John Gaydos
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Old 12-14-2020, 07:16 PM
  #568  
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Originally Posted by Soul Performance
Hey Guys,

We got some more exhaust clips today from Compguy36 of him running our Competition Headers with our Race Exhaust. It is ANGRY!!

https://www.youtube.com/watch?v=SWhU...ewQ61DCcwsH_cM

Regards,
John Gaydos
You were right. This setup is INSANE and I love it! It actually sound's so amazing. This video alone has sold me on your product. Thank you for posting this! The car sounds incredible with your full system. Great job guys! I know I'll be ordering my Soul exhaust system when I get my car
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Old 12-14-2020, 07:54 PM
  #569  
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Originally Posted by Soul Performance
Hey Guys,

We got some more exhaust clips today from Compguy36 of him running our Competition Headers with our Race Exhaust. It is ANGRY!!

https://www.youtube.com/watch?v=SWhU...ewQ61DCcwsH_cM

Regards,
John Gaydos

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Old 12-14-2020, 08:01 PM
  #570  
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That sounds insane. Probably too aggressive for me but damn it sounds good!
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