Exhaust 997 gundo mod does size matter

[HMP]

Can anyone recommend or share experiences living with the gundo hack please. it sounds great just not sure which by pass size from 1" - 2"
1.5" i've read closest to PSE open
Thanks in advance for comments cheers

[hugedouche]

Mines 1" ....so to speak...

IMO more than loud enough when you want it to be but not boomy or intrusive on the motorway.

[stup]

Modded plenty of these and personally also like 1" inch pipe, just a little louder at tickover and louder again under throttle but not too o.t.t