997.1 sound symposer?
No.
The vacuum hose just opens and closes the flap on the resonator which won't mater once you bypass it.
Easy install, looks cool and sounds great.
Oh and did not affect my CPO warranty!
The vacuum hose just opens and closes the flap on the resonator which won't mater once you bypass it.
Easy install, looks cool and sounds great.
Oh and did not affect my CPO warranty!
Last edited by wc11; Nov 9, 2012 at 10:43 AM.
They're claim is about 10 HP more. Difficult to really tell unless you dyno the car but 10 HP can;t hurt either.
355 HP on a stock 997.1s so 10 more is only a a minimal gain of 3%.
I do "feel" a slight difference in throttle response though. Not a dramatic as pressing that wonderful little "sport" button.
The part was the sound. Bypassing the Helmholtz resonator is noticeable.
Growls a little more at low rpms. Love it.
355 HP on a stock 997.1s so 10 more is only a a minimal gain of 3%.
I do "feel" a slight difference in throttle response though. Not a dramatic as pressing that wonderful little "sport" button.
The part was the sound. Bypassing the Helmholtz resonator is noticeable.
Growls a little more at low rpms. Love it.
Thread
Thread Starter
Forum
Replies
Last Post
vividracing
997
11
Oct 6, 2015 03:43 PM
gadgetman
Automotive Parts & Accessories For Sale/Wanted
11
Sep 11, 2015 06:17 PM
MrNurse
Boxster / Cayman
8
Sep 10, 2015 09:44 AM





