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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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GT4 and Spyder RS Aftermarket Exhausts

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Old 07-26-2023, 02:35 PM
  #31  
GT4rsG
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Originally Posted by UncleDude
i’ve heard IPE also releasing soon , i’m waiting for kline’s sound and power specs for order
Old 07-26-2023, 02:51 PM
  #32  
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Originally Posted by GT4rsG
i’ve heard IPE also releasing soon , i’m waiting for kline’s sound and power specs for order
they mention the power in the link, do you need more power?? LOL
Old 07-26-2023, 02:59 PM
  #33  
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Originally Posted by UncleDude
they mention the power in the link, do you need more power?? LOL
cant find any info about power on ther website do u have any link ? Lol

Last edited by GT4rsG; 07-26-2023 at 03:29 PM.
Old 07-26-2023, 03:31 PM
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Originally Posted by UncleDude
they mention the power in the link, do you need more power?? LOL

They mention up to 20 hp but is that what? WHP or bench? de-catted, catted, full system, cat-back, 100 cell or 200 cell cats????
To be honest, IMO this is just a random number they decided to use...they took exactly same info from the 718 GT4 system specs...it still has the same typo error in the quote for the number
Again shows how much research they are doing on the power gains dept.....it does look beautiful and the Inconel option is nice...and some will like the sound coupled with WP tips.
Old 07-26-2023, 03:34 PM
  #35  
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Originally Posted by jmartpr
They mention up to 20 hp but is that what? WHP or bench? de-catted, catted, full system, cat-back, 100 cell or 200 cell cats????
To be honest, IMO this is just a random number they decided to use...they took exactly same info from the 718 GT4 system specs...it still has the same typo error in the quote for the number
Again shows how much research they are doing on the power gains dept.....it does look beautiful and the Inconel option is nice...and some will like the sound coupled with WP tips.
you have a point , the numbers is almost identical with gt4 on power gain. Maybe they will release a dyno video like JCR and show some results with the sound .

Last edited by GT4rsG; 07-27-2023 at 01:11 PM.
Old 07-26-2023, 03:36 PM
  #36  
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Originally Posted by jmartpr
They mention up to 20 hp but is that what? WHP or bench? de-catted, catted, full system, cat-back, 100 cell or 200 cell cats????
To be honest, IMO this is just a random number they decided to use...they took exactly same info from the 718 GT4 system specs...it still has the same typo error in the quote for the number
Again shows how much research they are doing on the power gains dept.....it does look beautiful and the Inconel option is nice...and some will like the sound coupled with WP tips.
Originally Posted by GT4rsG
you have a point , the numbers is almost identical with gt4 on power gain. Mayve they will release a dyno video like JCR and show some results with the sound .
Only Dundon and Fabspeed seem to have actual dyno's. Everyone else is just marketing talk.
Old 07-26-2023, 03:43 PM
  #37  
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Originally Posted by GT4rsG
you have a point , the numbers is almost identical with gt4 on power gain. Mayve they will release a dyno video like JCR and show some results with the sound .
Unless a customer or independent shop does it, don't expect dyno numbers from Kline.
So far Dundon has numbers that you can trust and probably next week another major player will have more data to show the RL community.
Preliminary results are pretty good but it all works as a system and needs to be correctly designed for the car.
What I'm seeing is a lot of manufacturers taking their 718 GT4 offerings and altering flanges and/or and bit the looks....that's assuming the GT4 system was already optimized.
No problem if you want looks and sound but paying $1000s with sub-optimal power increase results is a waste of $$$$$$ IMHO...of course, I'm a track rat and power is my top priority.
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Old 07-26-2023, 04:11 PM
  #38  
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Originally Posted by cooler2442
Only Dundon and Fabspeed seem to have actual dyno's. Everyone else is just marketing talk.
Be careful there....dyno claims are like information floating around in social media . You really have to be careful about the source, motive and methodology.
BTW...check in detail the graphs for both of those manufacturers. IMHO one is doing the marketing talk.



Old 07-26-2023, 04:16 PM
  #39  
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Originally Posted by cooler2442
Only Dundon and Fabspeed seem to have actual dyno's. Everyone else is just marketing talk.
akra has also some numbers on their website but i really didn’t like the sound i don’t know why but it sounds like a 3 cylinder bike
Old 07-26-2023, 04:45 PM
  #40  
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Originally Posted by GT4rsG
akra has also some numbers on their website but i really didn’t like the sound i don’t know why but it sounds like a 3 cylinder bike
That's because their muffler design is like OEM....each cylinder bank with valves open dumps independently, no gas mixing or x pipe which is the design you want to get that Porsche sound.
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Old 07-26-2023, 10:48 PM
  #41  
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Originally Posted by IPSA
PSA


Do not install any OAP on a 4RS without heat shielding.
i saw on a Facebook GT4RS group where SOUL is now wrapping their OAP with a header wrap
Old 07-27-2023, 12:20 AM
  #42  
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I don't know which system it was...but the green 4RS that left the Chicago PCA event at DuPage airport a little early......


Last edited by dub; 07-27-2023 at 12:30 AM.
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Old 07-27-2023, 07:39 PM
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Originally Posted by sbsurfer
i saw on a Facebook GT4RS group where SOUL is now wrapping their OAP with a header wrap

AMEN
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Old 08-03-2023, 12:05 AM
  #44  
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Anyone here have a Kline system on order?
Old 08-03-2023, 01:30 AM
  #45  
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It's pretty ridiculous that the Kline system was announced a week ago and although it's ready to order, there are no audio clips of it on their socials, just hype videos with stupid music.
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