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So, it's happened! Kline Inconel cat-back system has just been fitted to my GTS. This just an introduction to it really, as I'm not getting the car back until Saturday because it is currently at the detailer having the Stealth PPF corrected. The verdict on that is that one still needs the stone-chip guards in the usual place if one has matte finish on a dark car, but the other things I thought were chips were in fact imperfections under the film, so the installer is replacing those panels. Happy days.
Here is a photo of the Kline system - metal does look nice and thin
Here is the underside of the car with the factory PSE
Few more shots from during installation (one with cheeky closeup of Fabspeed header)
And finally, a phone shot of the completed system installed (photographed without tips for some reason). I haven't seen the tips yet, but am presuming Kline sent them!
It did seem like the installation was pretty tricky as the kit apparently didn't come with any gaskets or fittings or pipework for the valves, which are in a different place from on the PSE. I don't know whether this is oversight on Kline's part or SOP, but my shop seemed a bit surprised at having to order parts from Porsche and make up bits of piping to work the valves. They say it sounds good though, so we shall see!
P.S. I have been without the GTS for a week and am actually appalled by how much I miss it. I've driven the Spyder and been out on my bike, and both were great, but there is simply nothing like a 911.
looks like a quality product... just out of curiosity what benefits are you expecting from it, sound obviously but do you expect any improvement in
performance incrementally over your Fabspeed headers?
looks like a quality product... just out of curiosity what benefits are you expecting from it, sound obviously but do you expect any improvement in
performance incrementally over your Fabspeed headers?
Just sound really. The option for a bit more volume and a tone that's less muffled than stock without being too antisocial. Kline don't advertise any power gains for the cat-back alone but say there might be a slight increase in 'responsiveness'. That said, Akrapovic advertise some good midrange gains on the 991 and the Kline system looks not a million miles away from theirs in terms of design...
Looking good Josh! You are inspiring me to switch from my PSE system now haha. Thinking I might do that this month now. Looking forward to hearing your thoughts of the improvements
Looking good Josh! You are inspiring me to switch from my PSE system now haha. Thinking I might do that this month now. Looking forward to hearing your thoughts of the improvements
Thanks. We'll see. Should be able to get a bit of video once I have car back this weekend. Feedback from installer is that quiet mode is quiet and loud mode is loud, which seems like a decent start starting point...!
The 991.2 has some EXCELLENT potential to say the least. The S-PSE models have a much different sound between Sport and Sport Plus mode based on the wastegates being opened or closed (Sport open, Sport Plus closed). Sport mode has that lovely burble/overrun of an N/A 991, and is my personal favorite. And of course you can actuate the valves open or closed any time, so you have quite the selection of different exhaust notes haha.
So I picked the car up yesterday. Oh my word - I am very, very impressed indeed. No videos yet as was short of time (and for reasons that will shortly be clear, I can no longer take an exhaust video in my neighbourhood!) but I will attempt a description.
The car sounds very exotic and mean on cold startup. It actually somehow sounds like the engine is in a higher state of tune if that makes any sense. When it settles to idle, though, it is hardly louder than PSE-off was before. Driving with valvles closed, the tone is different - quite markedly so. It's a little deeper, but really refined, a mournful wail that rises to a yowl as the revs get higher. It is cat-like, somehow, and you can rev out the car and have it still be civilised (I think if you really floor it the valves do still open somewhat). There is no drone, no resonance, nothing unpleasant at all. The cabin on the motorway is still quieter than the Spyder with PSE off.
And then you switch it on, and the cat becomes a lion. It is a big sound, certainly - much louder than PSE-on before, but I never imagined that a sound at that volume could also be so pleasing and precise. I had IPE on my old Boxster and that sounded great outside the car, but at lower revs inside it was a bit boomy. This is nothing like that. It's like turning up rock music on a really high-end hi-fi. It's loud, but it should be loud, and it is good at being loud. There is, again, no drone. In fact, I would say there is even less cabin resonance than with PSE on, where I felt there was just a tiny bit. How Kline achieve this I have no idea, but suspect the Inconel material has something to do with it. The metal of this exhaust is very thin indeed.
The icing on the cake is that the PSE button now affects performance (this was something nice the IPE exhaust also did). The car feels as it did before when I have the valves closed, but when I open them it definitely revs more freely through the midrange. I only took it to redline a couple of times as Old Mother Rat had accompanied me to pick the car up, but it was epic (OMR agreed). Revving out a 911 should be a tiny bit frightening. Now it is.
There are also differences between the modes - just a rumble on overrun in normal mode, a lot of pap-pap-papping in sport, and sport plus is reminiscent of machine-gun fire. It is too loud with valves open for polite town use now. I used to have PSE on when I went to the shops and now I will not, but the note it makes with valves closed is so pleasing I won't need to, and now the car has a full attack mode when out on country roads. It's exactly as I wanted it to be.
What else? I still have the original tips on the car, as Kline were doing a small redesign on them I think, so I'll put up some pictures when I have the new ones on.
That's it I. Heartiest recommendations. It's not a cheap system, but it's still way less than Akrapovic. I also asked Felix about the 991.2 system and he said it's nearly ready so good times for all!
It did seem like the installation was pretty tricky as the kit apparently didn't come with any gaskets or fittings or pipework for the valves, which are in a different place from on the PSE. I don't know whether this is oversight on Kline's part or SOP, but my shop seemed a bit surprised at having to order parts from Porsche and make up bits of piping to work the valves.
09-08-2016 | 02:13 PM
Kline exhaust for 991
You will love the tips also!
