See, learned something.

 

Sport does not use the speakers, it opens up the Symposer, which is a duct from the intake with a membrane.

By default, hitting Sport or Sport Plus activates the PSE button too, though.

 

I thought only sport plus would activate the PSE as well? Makes no difference really, but I thought I drove around with the sport button on and the PSE off.

 

Doh! you're right.

 

does anyone know if a "gundo" hack is possible on the 991. Know many did it on the 997's where a small pipe (2") was welded between the inlet and outlet pipes creating a sound identical to the pse system. cost was $100 from a local exhaust shop/

 

It certainly won't be identical. PSE is a different center section, not just bypassed side mufflers.

You would get some more sound out of it. It'd likely be similar but quieter than the Sharkwerks bypass pipes.

 

that's what that hack was called! i remember reading in the 997 forums but for the life of me i could not remember. this would be awesome if we could do this on the 991 exhuast system.

 

I was gonna pull the trigger on the sharkwerks side exhuast, but i'll wait a few days to see if there is a gundo hack for the 991.

 

Exactly- its a completely different piece with less restrictions.

 

anybody have a picture of a stock 991s exhaust? might give it a shot. Did the "gundo" hack on the 997 and was pleased with the results

 

the mufflers are similar - you could certainly do it.

No idea how it will sound.

 

check out this fabspeed video...at the end he mentions what i believe is the gundo hack.