Ever since I got my 997.2S with the Fabspeed X-pipe, I still felt the exhaust note was not loud or aggressive enough. I was looking at different exhaust options and have always been curious of the Gundo Hack. However I have heard that it was not as good for the 997.2 because of the additional center muffler. Since I have the X-pipe already, I decided to give it a try and luckily came across a set of Gundo mufflers with 2 inch bypass pipes locally. After installing them, I immediately noticed a significant increase in volume. The volume is not obnoxiously loud when driving around town, but once you get pass 3,500 on the rpm, it really opens up and sounds awesome. I was able to hear my friend driving the car over a block away. I was hoping some variation in the pitch of sound but the tone pretty much remained deep throughout the rev range. IMHO for a few hundred quids, this is definitely a worthwhile mod

 

Sounds good. Hard to hear the true sound through iPad or computer speakers....just isn't the same as live.

I have just a Fister Hack no X Pipe and it sounds great when you hear it not driving. I know from the outside as your driving people hear as you can see them turn to find out where the exhaust note is coming from. Car sounds exotic and powerful.