Factory Sport Exhaust Upgrade?
Just last night when I was enjoying my 1st-gear-3K-rpm-15mph PSE roaring right before a stop light, a no-light-bar Police car happened to show up at the intersection right in front of me.
My exhaust sound must have caught his attention, he looked around and tried to figure out which car made that loud noise.
I quickly pressed a button and turned off the PSE, and then accelerated in a smooth & quiet manner.
I glanced back, and saw him was still puzzling and trying to figure out which car made the noise...
I like the PSE
With best regards,
My exhaust sound must have caught his attention, he looked around and tried to figure out which car made that loud noise.
I quickly pressed a button and turned off the PSE, and then accelerated in a smooth & quiet manner.
I glanced back, and saw him was still puzzling and trying to figure out which car made the noise...
I like the PSE

With best regards,
Last edited by axhoaxho; Mar 4, 2008 at 11:06 PM.
My vote foes for the Tubi /F77 package . I loved it on my last car . The sound, power, midrange punch of the GIAC flash along with the carbon airbox being like a work of art.
http://www.youtube.com/watch?v=XMWLpdVrhWU
http://www.youtube.com/watch?v=XMWLpdVrhWU
Just last night when I was enjoying my 1st-gear-3K-rpm-15mph PSE roaring right before a stop light, a no-light-bar Police car happened to showed up at the intersection right in front of me.
My exhaust sound must have caught his attention, he looked around and tried to figure out which car made that loud noise.
I quickly pressed a button and turned off the PSE, and then accelerated in a smooth & quiet manner.
I glanced back, and saw him was still puzzling and trying to figure out which car made the noise...
I like the PSE
With best regards,
My exhaust sound must have caught his attention, he looked around and tried to figure out which car made that loud noise.
I quickly pressed a button and turned off the PSE, and then accelerated in a smooth & quiet manner.
I glanced back, and saw him was still puzzling and trying to figure out which car made the noise...
I like the PSE

With best regards,
Just last night when I was enjoying my 1st-gear-3K-rpm-15mph PSE roaring right before a stop light, a no-light-bar Police car happened to show up at the intersection right in front of me.
My exhaust sound must have caught his attention, he looked around and tried to figure out which car made that loud noise.
I quickly pressed a button and turned off the PSE, and then accelerated in a smooth & quiet manner.
I glanced back, and saw him was still puzzling and trying to figure out which car made the noise...
I like the PSE
With best regards,
My exhaust sound must have caught his attention, he looked around and tried to figure out which car made that loud noise.
I quickly pressed a button and turned off the PSE, and then accelerated in a smooth & quiet manner.
I glanced back, and saw him was still puzzling and trying to figure out which car made the noise...
I like the PSE

With best regards,
Personally, i am so happy with the PSE, the sound is terrific, the button comes in handy, especially if its your dd, i think u should go to the dealer and hear it for yourself
I have the PSE on my 997S and couldn't be happier. Initially, you will think that you don't need the off switch, but will come to use it. I had aftermarket (Fabspeed) on my 996 and there was some drone.
For those who have made the "no power gains" point, while it is true that Porsche claims no power; why is it the stock system with the X51 power option if it's in any way a bottlenecking factor?
For those who have made the "no power gains" point, while it is true that Porsche claims no power; why is it the stock system with the X51 power option if it's in any way a bottlenecking factor?
+ 1
With the PSE you get a complete System . Designed by the Engineers who designed the car . Not by someone who welds mufflers in his garage.
When accelerating agressively ( at speeds below ~ 50 mph ) the PSE valves are designed to close , thereby increasing the backpressure (for more torque ) and open again at higher speeds for less resistance .
With the valves open , 2/3 of the mufflers get bypassed.
I would think that would reduce the backpressure by quite a bit ( probably less resistance than most aftermarket jobs)
Just because Porsche does not advertise any power gains does not mean there are none .
Unlike the aftermarket muffler welders, Porsche has to PROVE it, not just make ridiculous claims based on Dyno tests from Joe's garage.
Either way , I did not buy the PSE to get 2 or 3 more HP .I love the sound.
It sounds like a Porsche , not like a suped up Honda on steroids .
Last edited by JCS; Mar 6, 2008 at 08:42 AM.
+ 1
With the PSE you get a complete System . Designed by the Engineers who designed the car . Not by someone who welds mufflers in his garage.
When accelerating agressively ( at speeds below ~ 50 mph ) the PSE valves are designed to close , thereby increasing the backpressure (for more torque ) and open again at higher speeds for less resistance .
With the valves open , 2/3 of the mufflers get bypassed.
I would think that would reduce the backpressure by quite a bit ( probably less resistance than most aftermarket jobs)
Just because Porsche does not advertise any power gains does not mean there are none .
Unlike the aftermarket muffler welders, Porsche has to PROVE it, not just make ridiculous claims based on Dyno tests from Joe's garage.
Either way , I did not buy the PSE to get 2 or 3 more HP. I love the sound.
It sounds like a Porsche , not like a suped up Honda on steroids .
With the PSE you get a complete System . Designed by the Engineers who designed the car . Not by someone who welds mufflers in his garage.
When accelerating agressively ( at speeds below ~ 50 mph ) the PSE valves are designed to close , thereby increasing the backpressure (for more torque ) and open again at higher speeds for less resistance .
With the valves open , 2/3 of the mufflers get bypassed.
I would think that would reduce the backpressure by quite a bit ( probably less resistance than most aftermarket jobs)
Just because Porsche does not advertise any power gains does not mean there are none .
Unlike the aftermarket muffler welders, Porsche has to PROVE it, not just make ridiculous claims based on Dyno tests from Joe's garage.
Either way , I did not buy the PSE to get 2 or 3 more HP. I love the sound.
It sounds like a Porsche , not like a suped up Honda on steroids .
Well said! If you want more horsepower, get a turbo. With the PSE, you get it for the sound and convenience of turning it off. I love the sound and couldnt be hapier with it, especially knowing that its all 100% Porsche
+ 1
With the PSE you get a complete System . Designed by the Engineers who designed the car . Not by someone who welds mufflers in his garage.
When accelerating agressively ( at speeds below ~ 50 mph ) the PSE valves are designed to close , thereby increasing the backpressure (for more torque ) and open again at higher speeds for less resistance .
With the valves open , 2/3 of the mufflers get bypassed.
I would think that would reduce the backpressure by quite a bit ( probably less resistance than most aftermarket jobs)
Just because Porsche does not advertise any power gains does not mean there are none .
Unlike the aftermarket muffler welders, Porsche has to PROVE it, not just make ridiculous claims based on Dyno tests from Joe's garage.
Either way , I did not buy the PSE to get 2 or 3 more HP. I love the sound.
It sounds like a Porsche , not like a suped up Honda on steroids .
With the PSE you get a complete System . Designed by the Engineers who designed the car . Not by someone who welds mufflers in his garage.
When accelerating agressively ( at speeds below ~ 50 mph ) the PSE valves are designed to close , thereby increasing the backpressure (for more torque ) and open again at higher speeds for less resistance .
With the valves open , 2/3 of the mufflers get bypassed.
I would think that would reduce the backpressure by quite a bit ( probably less resistance than most aftermarket jobs)
Just because Porsche does not advertise any power gains does not mean there are none .
Unlike the aftermarket muffler welders, Porsche has to PROVE it, not just make ridiculous claims based on Dyno tests from Joe's garage.
Either way , I did not buy the PSE to get 2 or 3 more HP. I love the sound.
It sounds like a Porsche , not like a suped up Honda on steroids .
I'm not knocking the PSE. I've had it before and thought it sounded great. As you noted above, the valves close during acceleration. This was not done for increased backpressure, but for Euro noise regulations. Never liked the on/off exhaust and ended up unplugging it. In terms of resistance, the headers and cats are quite restricted in the stock form- 400 in stock vs my 100 in europipe.
If you think a tubi, europipe, fabspeed,etc sound like a Honda; I think you are a bit uninformed.
Please, you make it sound like any aftermarket exhaust is cheap. Tubi, europipe, etc are all quality exhausts. My europipe costs much more than the PSE and the build is outstanding.
I'm not knocking the PSE. I've had it before and thought it sounded great. As you noted above, the valves close during acceleration. This was not done for increased backpressure, but for Euro noise regulations. Never liked the on/off exhaust and ended up unplugging it. In terms of resistance, the headers and cats are quite restricted in the stock form- 400 in stock vs my 100 in europipe.
If you think a tubi, europipe, fabspeed,etc sound like a Honda; I think you are a bit uninformed.
I'm not knocking the PSE. I've had it before and thought it sounded great. As you noted above, the valves close during acceleration. This was not done for increased backpressure, but for Euro noise regulations. Never liked the on/off exhaust and ended up unplugging it. In terms of resistance, the headers and cats are quite restricted in the stock form- 400 in stock vs my 100 in europipe.
If you think a tubi, europipe, fabspeed,etc sound like a Honda; I think you are a bit uninformed.
If the factory system was so good then why do racing teams not use them? Factory systems are designed to fill the need of the masses and governing authorities. The tuner business has grown based on the fact that the factory parts aren't what everyone wants. Perhaps the claims of HP and TQ aren't 100% accurate, but even the most conservative people still realize that there are gains to be made.
The whole "no power gain" thing is false. Porsche just says that so that they wont have to pass a whole new emissions test. If there is horsepower gain thats what they would have to do. It actually add 12 to 20 more hp and all of you who have PSE try to turn it off while you are cruising on the freeway. You will notice a significant decrease in power. I know i do when i turn mine off. OH and i love my PSE on my S, sounds great but its not too much and i can turn it off whenever i want.
The whole "no power gain" thing is false. Porsche just says that so that they wont have to pass a whole new emissions test. If there is horsepower gain thats what they would have to do. It actually add 12 to 20 more hp and all of you who have PSE try to turn it off while you are cruising on the freeway. You will notice a significant decrease in power. I know i do when i turn mine off. OH and i love my PSE on my S, sounds great but its not too much and i can turn it off whenever i want.
Well if you go on the website it says it is a stage II upgrade and when i bought my car i asked if it gives any hp gain and the dealer said yes but it porsche doesnt like to say so because they dont want to pass the emissions test. I dont know they could be lying to me.
Last edited by sneakrhead23; Mar 5, 2008 at 12:27 PM.
Again, I'm not familiar with the PSE, but I would take anything a dealer who is trying to sell you a car with a grain of salt.
Sounds like the PSE is quite the deal?
Would you mind sharing the source for your data -- because your claim is quite astounding.







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