Self install Cat Bypass
 

Is this a fairly simple job? I'm keeping the stock muffler. I'm pretty experienced with DOY car repairs, but this would be my first Porsche project.

I don't have a torch etc., so I'm hoping that things come apart as expected. What should I watch out for?

Thanks,

Rusty bolts. If doing it with the engine out, have an angle grinder ready. If it's still in, then a good dremel with lots of cutting disks. The nuts are usually 12mm, so be careful not to round them off with a 13mm wrench.

watch out for goblins. they live in there.
its easy. if you need help im in north hollywood

Not bad at all. Make sure you have replacement nuts bolts and gaskets. The gaskets shouldn't be reused.

I hit all my bolts with PB balster several days before the removal. All came off with normal wrenching.

It all depends on how rusty the nuts and bolts are. I had to cut (grind) all of the heat shield bolts off, then I had to cut the three bolts between the cat and the muffler. I was able to remove 3 of the 6 bolts between the cat and the header pipes. I had to cut the other 3! This was after soaking all of them in PB blaster for two days in a row prior.

It's not a hard job, but it requires lots of patience.

Good luck!

Heat shield was missing on mine already, but I did take the left rear tire off so I could have a straight shot at a couple bolts. You want to make sure you give it your best shot the first time because if the bolts/nuts round off, then you're grinding. Mine were rusted, but came off pretty easy.

It was only after I removed the cat to install the bypass pipe, did I see the cat was empty. I bought new hardware/gaskets and reinstalled the gutted cat instead of the bypass pipe. Stock looking at least means I can pass visual emissions without having to R&R that bypass pipe.