Just got my Gundo Hack done today....Whooooohoooooooo
I went with a 1 3/4 pipe. It sounds incredible. What a difference.
Here is a pick of the weld job. Sorry for the crappy pic.

 

Awesome! Did you pulled the cans off yourself?

 

Hey did you do the whole thing yourself or have it done through a shop?

 

I pulled the cans myself and had the same mod done. BEST $80 i've ever spent!

 

You gotta lean that bike over a tad more.

 

Did you have to jack the car up on stands? Or take off the rear bumper. I really wanted to do the Gundo hack when I bought my car, but got worried about having to take it all apart...

 

I let the shop take the cans off, do the hack and put them back on. Took a little over 2 1/2 hours and cost me $200.

 

I took the cans off myself, very easy, took me about 45min. You will have to remove the rear bumper to get to the can, I jacked up the car so I have more room to work with; although I believe you can do without. Follow these instrustions (http://www.renntech.org/forums/tutor...-bypass-pipes/) the 996 and 997 removal is identical.

 

Yes you will need to jack the car up. I used the screw type floor jack because I think it is safer than the hydraulic unless you plan to use a stand in conjunction, then either would be fine. Bumper removal is absolutely not necessary. Some members chose to remove it for easier access. I did it with the bumper on the car with no problems.

 

Cool! You took the easy way out.
Thanks Gundo!!!!

 

Went and got my cans hacked this week - oh, wow, what a difference in sound!! Just love it. Wifey, not so much. I still told her it sounds like sweet music. Barely noticeable with cruising speeds and revs and the windows / sunroof up. But give it more throttle or get past 4k RPM and wowwow - PSE sound without PSE price! And with the windows / sunroof open, I can enjoy the sounds at all RPMs. Best return for the $$$ mod I've done so far.

Thanks again BLKonBLK for the referral.

Here's a pic of the weld:

 

It's certainly the best $200 you can spend on a Carrera.

 

Niebourhood mechanic done this job for me. Best $ spent on my 911 to date.

 

How would the sound compare to buying the sharkwerks muffler bypass for 600$?

 

A muffler bypass is going to be a lot louder, and (to some including me) too obnoxious. Plus the "hack" sounds about $400 better.