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718 GTS 4.0/GT4/GT4RS/Spyder/25th Anniversary Discussions about the 718 version of the GT4RS, GTS 4.0, GT4, Spyder and 25th Anniversary Boxster
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Kline 718 GT4/Spyder exhaust

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Old 05-03-2024 | 12:19 PM
  #2236  
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Originally Posted by UncleDude
The PSE button on does change the behaviour of the valve opening and closing at higher rpm’s - see post 2193. It doesn’t just simply open the valves at idle. I might try shifting my collars to all open just to see what it is like.
UncleDude,

I have heard Jim Dillard's Spyder a few times and he does have the Cargraphics valve controller with Valves-Locked-Open and it sounds pretty darn nice.

I say give it a try as you might prefer Locked-Open buddy.

Terry
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Old 05-04-2024 | 09:25 PM
  #2237  
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Has anyone installed the Kline RS tips on a GTS 4.0? Wondering how well they look and if there are any fitment issues. Hopefully, there are some pics out there of the GTS with these installed.
Old 05-15-2024 | 05:19 PM
  #2238  
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Anyone know which vendor has the best price on the Kline Cat-Back exhaust (perhaps with forum pricing)?
TIA
Old 05-15-2024 | 05:20 PM
  #2239  
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Originally Posted by fasteddie99
Anyone know which vendor has the best price on the Kline Cat-Back exhaust (perhaps with forum pricing)?
TIA
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Old 05-15-2024 | 06:21 PM
  #2240  
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Curious about the same. Thanks! I take it sould OAP (resonated) w/ jet hot are best sourced from Soul?
Old 05-15-2024 | 08:04 PM
  #2241  
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Eric is the man and may even have it in stock.
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Old 05-15-2024 | 08:29 PM
  #2242  
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Originally Posted by fasteddie99
Anyone know which vendor has the best price on the Kline Cat-Back exhaust (perhaps with forum pricing)?
TIA
Eric//Supreme power
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Old 05-15-2024 | 08:40 PM
  #2243  
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I think all the vendors on here will provide a competitive price.
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Old 05-16-2024 | 07:17 AM
  #2244  
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Thanks everyone. Ordered from Eric at Supreme Power.
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Old 05-16-2024 | 12:04 PM
  #2245  
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This thread is too long for me to read altough I have read through some sections. If someone could please answer a couple of basic questions to help me understand the nuances of this particular aftermarket exhaust:
a) Do you keep the PSE switch on or off with the Kline system?
b) If PSE is on do you hear a boomy resonance (like a subwoofer suddenly coming on) at 2000-2500 rpms as you shift through this rpm range? Or is PSE off your preferred setting?
c) How is the cabin sound with PSE on or off at a steady speed?
d) Do you hear the symposer kick in at 4000 rpms when PSE is on?

Thanks.
Old 05-16-2024 | 12:13 PM
  #2246  
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Originally Posted by AnandN
This thread is too long for me to read altough I have read through some sections. If someone could please answer a couple of basic questions to help me understand the nuances of this particular aftermarket exhaust:
a) Do you keep the PSE switch on or off with the Kline system?
b) If PSE is on do you hear a boomy resonance (like a subwoofer suddenly coming on) at 2000-2500 rpms as you shift through this rpm range? Or is PSE off your preferred setting?
c) How is the cabin sound with PSE on or off at a steady speed?
d) Do you hear the symposer kick in at 4000 rpms when PSE is on?

Thanks.
a. On
b. No, I don’t notice this anymore after break in and fixing a few clearance issues on the initial install.
c. Cabin sound is similar, outside is definitely quieter when PSE off.
d. No never can hear a the SS in my GT4

Also, sharing a shot of our diffusers that were developed to fit seamlessly with the Kline rear on Syders, RSs, and GT4s.




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Old 05-16-2024 | 01:19 PM
  #2247  
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Originally Posted by fasteddie99
Thanks everyone. Ordered from Eric at Supreme Power.
Thank you for your order! Everything was in stock. Tracking soon to follow
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Old 05-16-2024 | 02:09 PM
  #2248  
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Originally Posted by TRSCobra
Did a little photo shoot with some audio of my Kline inconel setup this weekend. Sound came out really good!

https://youtu.be/WrCkTr9B_Dg?si=OvS5ctz91t287xTK
Wow! Lovely recording but that high-pitched, metallic ringing sound would drive me insane. To me, it doesn't sound like a large displacement engine at all. Recording is phenomenal and very useful. Congratulations. Good thing there are so many choices for different tastes.

Last edited by subwoofer; 05-16-2024 at 02:13 PM.
Old 05-16-2024 | 08:25 PM
  #2249  
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FWIW
I've gone on a few group drives with buddies since picking up the car.
Last week went on a drive with one in particular who's followed me with OEM exhaust and now Kline.
He said the new exhaust is WAY louder - like REALLY loud from behind. He said it makes all sorts of loud pops and bangs LOL...
From inside the cabin it sounds slightly louder than stock, I guess from behind it's much louder. I was mostly in the 5k+ rpm range on the drive.
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Old 05-17-2024 | 10:40 PM
  #2250  
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Originally Posted by MrFunk
FWIW
I've gone on a few group drives with buddies since picking up the car.
Last week went on a drive with one in particular who's followed me with OEM exhaust and now Kline.
He said the new exhaust is WAY louder - like REALLY loud from behind. He said it makes all sorts of loud pops and bangs LOL...
From inside the cabin it sounds slightly louder than stock, I guess from behind it's much louder. I was mostly in the 5k+ rpm range on the drive.
Louder outside and not so much inside? PSE on or off?


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