Just had Fabspeed GT420 Package Installed...
#46
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John - I can only speak for myself, but would assume several people may be interested in "overlay" dynos of:
stock vs sport headers with PSE vs race headers with PSE vs sport + valvetronic vs race + valvetronic
I know this sounds like a lot of work, but certainly dynos have been done with most (if not all) of these combinations... so it's just a matter of pulling the data for the combinations you have, and creating the overlay. In order to make an informed purchase decision, it would be interesting to see the gains and improvements at each level... and balance of noise vs performance.
Again, I can only speak for myself... but this data is what I happen to be tossing around in my mind, in deciding which route to take. It's more difficult to discern from separate dyno charts, especially where data ranges may not consistently match up.
Much thanks.
stock vs sport headers with PSE vs race headers with PSE vs sport + valvetronic vs race + valvetronic
I know this sounds like a lot of work, but certainly dynos have been done with most (if not all) of these combinations... so it's just a matter of pulling the data for the combinations you have, and creating the overlay. In order to make an informed purchase decision, it would be interesting to see the gains and improvements at each level... and balance of noise vs performance.
Again, I can only speak for myself... but this data is what I happen to be tossing around in my mind, in deciding which route to take. It's more difficult to discern from separate dyno charts, especially where data ranges may not consistently match up.
Much thanks.
#48
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If this helps for sound at all, a rough video clip while on the coast today, some tunnel at the end.. Headers no exhaust with an iPhone.
Porsche 981 Spyder Fabspeed Headers Mountain Drive to Golden Gate - YouTube
Porsche 981 Spyder Fabspeed Headers Mountain Drive to Golden Gate - YouTube
![rockon](https://rennlist.com/forums/graemlins/rockon.gif)
So you have fabspeed sports headers with the standard PSE, is that correct ??
If so, I take it in your video you were running in SP mode.
How's the sound if run SP mode, but turn off the PSE button.
How does this Compared to stock ??
Thanks
#49
Race Director
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Originally Posted by Boxster7
Hi CAlexio, nice video, thanks for posting ![rockon](https://rennlist.com/forums/graemlins/rockon.gif)
So you have fabspeed sports headers with the standard PSE, is that correct ??
If so, I take it in your video you were running in SP mode.
How's the sound if run SP mode, but turn off the PSE button.
How does this Compared to stock ??
Thanks
![rockon](https://rennlist.com/forums/graemlins/rockon.gif)
So you have fabspeed sports headers with the standard PSE, is that correct ??
If so, I take it in your video you were running in SP mode.
How's the sound if run SP mode, but turn off the PSE button.
How does this Compared to stock ??
Thanks
My favorite mode is sport plus (auto blip) with exhaust off for the city... The transition from off to on with headers is beautiful. Every single 981 should have fabspeed sport headers.. It's truly a win-win.
#50
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If you the car without PSE, then below 4K rpm it sounds normal, then above 4K it takes on a very beautiful howling race car sound. The transition is very smooth and the sound is loud but not offensive. Also, on downshifts, even with sport plus engaged where transmission auto blips, it's a quiet autoblip. When you have the PSE engaged then the exhaust crackles and pops from any rpm, downshifts sound like race car. Basically, fabspeed sport headers leave your car sounding stock below 4K rpm, and mild race car above 4K rpm.. As long as you shift below 4K your car is totally stock sounding.
My favorite mode is sport plus (auto blip) with exhaust off for the city... The transition from off to on with headers is beautiful. Every single 981 should have fabspeed sport headers.. It's truly a win-win.
My favorite mode is sport plus (auto blip) with exhaust off for the city... The transition from off to on with headers is beautiful. Every single 981 should have fabspeed sport headers.. It's truly a win-win.
Sounds like a great option.
I will be having words ref warranty with my OPC next time I'm in there.
Enjoy
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#51
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John - I can only speak for myself, but would assume several people may be interested in "overlay" dynos of:
stock vs sport headers with PSE vs race headers with PSE vs sport + valvetronic vs race + valvetronic
I know this sounds like a lot of work, but certainly dynos have been done with most (if not all) of these combinations... so it's just a matter of pulling the data for the combinations you have, and creating the overlay. In order to make an informed purchase decision, it would be interesting to see the gains and improvements at each level... and balance of noise vs performance.
Again, I can only speak for myself... but this data is what I happen to be tossing around in my mind, in deciding which route to take. It's more difficult to discern from separate dyno charts, especially where data ranges may not consistently match up.
Much thanks.
stock vs sport headers with PSE vs race headers with PSE vs sport + valvetronic vs race + valvetronic
I know this sounds like a lot of work, but certainly dynos have been done with most (if not all) of these combinations... so it's just a matter of pulling the data for the combinations you have, and creating the overlay. In order to make an informed purchase decision, it would be interesting to see the gains and improvements at each level... and balance of noise vs performance.
Again, I can only speak for myself... but this data is what I happen to be tossing around in my mind, in deciding which route to take. It's more difficult to discern from separate dyno charts, especially where data ranges may not consistently match up.
Much thanks.
However, in this particular case we actually did accomplish the very graph overlays you are looking for with the original GT4 we had at our facility. We posted the pictures in our Valvetronic Exhaust product page as we felt it would be the most appropriate area for reference.
If you the car without PSE, then below 4K rpm it sounds normal, then above 4K it takes on a very beautiful howling race car sound. The transition is very smooth and the sound is loud but not offensive. Also, on downshifts, even with sport plus engaged where transmission auto blips, it's a quiet autoblip. When you have the PSE engaged then the exhaust crackles and pops from any rpm, downshifts sound like race car. Basically, fabspeed sport headers leave your car sounding stock below 4K rpm, and mild race car above 4K rpm.. As long as you shift below 4K your car is totally stock sounding.
My favorite mode is sport plus (auto blip) with exhaust off for the city... The transition from off to on with headers is beautiful. Every single 981 should have fabspeed sport headers.. It's truly a win-win.
My favorite mode is sport plus (auto blip) with exhaust off for the city... The transition from off to on with headers is beautiful. Every single 981 should have fabspeed sport headers.. It's truly a win-win.
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PM sent, lets connect and see what we can work out for you. We do have a special going on this month that you can take advantage of
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__________________
Porsche Performance Specialist
John@Fabspeed.com
215-618-9796
Fabspeed Motorsport USA
155 Commerce Drive Fort Washington, PA 19034
www.Fabspeed.com
Porsche Performance Specialist
John@Fabspeed.com
215-618-9796
Fabspeed Motorsport USA
155 Commerce Drive Fort Washington, PA 19034
www.Fabspeed.com
#52
Burning Brakes
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I'd love to know what the UK situatino was. My understanding is that there is a piece of EU law called the automotive block exemption, which is pro-competition legislation broadly equivalent to Magnusson-Moss, but I think that PCGB's position on it is 'Oh really? We'll see you in court' I know I had to take my headers off for some warranty bs on the 911, but that may just have been my local dealer being incompetent, which I'm sorry to say is not news.
Don't want to derail the thread but would be interested to hear others' experiences...
Don't want to derail the thread but would be interested to hear others' experiences...
#54
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I'd love to know what the UK situatino was. My understanding is that there is a piece of EU law called the automotive block exemption, which is pro-competition legislation broadly equivalent to Magnusson-Moss, but I think that PCGB's position on it is 'Oh really? We'll see you in court' I know I had to take my headers off for some warranty bs on the 911, but that may just have been my local dealer being incompetent, which I'm sorry to say is not news.
Don't want to derail the thread but would be interested to hear others' experiences...
Don't want to derail the thread but would be interested to hear others' experiences...
![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
#55
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
I'd love to know what the UK situatino was. My understanding is that there is a piece of EU law called the automotive block exemption, which is pro-competition legislation broadly equivalent to Magnusson-Moss, but I think that PCGB's position on it is 'Oh really? We'll see you in court' I know I had to take my headers off for some warranty bs on the 911, but that may just have been my local dealer being incompetent, which I'm sorry to say is not news.
Don't want to derail the thread but would be interested to hear others' experiences...
Don't want to derail the thread but would be interested to hear others' experiences...