997 RS/GT3 Exhaust valve.
Discussion
Want it open all the time, anybody cracked it?
Exhaust valve seems to open on a combination of throttle and revs. It won't open below 3k even with full throttle in higher gears.
Also pulling away gently it opens then closes about 1500 rpm, then re opens from 3kish onwards. If you floor it from standstill it stays open.
Cheers
Rob
Exhaust valve seems to open on a combination of throttle and revs. It won't open below 3k even with full throttle in higher gears.
Also pulling away gently it opens then closes about 1500 rpm, then re opens from 3kish onwards. If you floor it from standstill it stays open.
Cheers
Rob
I presume this is the same modification as for the standard 997 Porsche Sports Exhaust??
If so, you simply pull out one of the vacuum hoses in the engine bay controlling the valve - takes all of 3secs and is reversable straight away. Done it on mine so PSE is permanently on loud and removes the annoying cut in due to Swiss noise regs.
This thread shows you how (EDIT: just noticed the photos have been removed....)
http://www.rennteam.com/showflat.php?Cat=0&Num...
You might still figure it out from the above thread - If you get stuck, let me know and I'll walk you through it.
If so, you simply pull out one of the vacuum hoses in the engine bay controlling the valve - takes all of 3secs and is reversable straight away. Done it on mine so PSE is permanently on loud and removes the annoying cut in due to Swiss noise regs.
This thread shows you how (EDIT: just noticed the photos have been removed....)
http://www.rennteam.com/showflat.php?Cat=0&Num...
You might still figure it out from the above thread - If you get stuck, let me know and I'll walk you through it.
Edited by Erik997 on Wednesday 15th August 16:59
I'm really not sure about a GT/RS - it may be totally different.
I have a C2S with a PSE. The Sport button switches between Loud and Normal. However, due to EU drive by noise regulations even the Loud mode has an annoying range (I think between 25mph to 45mph) when the exhaust goes quiet.
Is this the same for a GT3?
Disconnecting the vacuum hose simply opens the valves permanently meaning the drive by is disconnected and the exhaust is permanently on Loud.
I have a C2S with a PSE. The Sport button switches between Loud and Normal. However, due to EU drive by noise regulations even the Loud mode has an annoying range (I think between 25mph to 45mph) when the exhaust goes quiet.
Is this the same for a GT3?
Disconnecting the vacuum hose simply opens the valves permanently meaning the drive by is disconnected and the exhaust is permanently on Loud.
Edited by Erik997 on Wednesday 15th August 17:19
The connector is electrical, no vacuum hoses are disconnected. Just squeeze the clip and it releases with ease.
The difference is phenomenal. Noise is much louder, but with no resonance. Also when you heel and toe on the downshift, you get the full crescendo effect, rather than the lame rev rise with the sport button.
A 3 second, zero cost mod has transformed the car!
The difference is phenomenal. Noise is much louder, but with no resonance. Also when you heel and toe on the downshift, you get the full crescendo effect, rather than the lame rev rise with the sport button.
A 3 second, zero cost mod has transformed the car!
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