Bit of advice please.

Finally got fed up with the stock sound of my exhaust (2013 C800)

I have put a pointed rod through the first baffle no problem.

There is now what appears to be a second baffle just a small distance further in from the first.

Does this need to be done also and can it be done without upsetting the 'cat' ?

Thanks guys

Yes it needs to be pierced as well, when the rod is touching the second baffle place a piece of insulating tape on the rod in line with the end of the exhaust, you'll feel it pierce the baffle and the tape should move around an inch or so, I believe the 'cat' is about 3"-4" away from the second baffle so you should not have a problem, hope this helps Gary.

Cheers much appreciated 

There's loads of stuff in the 'Garage' section on this - well worth a look. When you've poked the baffles through, have a listen, if the sound is what you want, fine if not think about drilling the backplates. Most folk seem to do 4 x 10mm holes. After plucking up courage (and with lots of guidance from the likes of Sim and others) I started off with 4X5mm and increased slowly until I got the sound I wanted. Happy I did as it sounds great, not offensive - just a nice burble especialy under a bit of power.

The end plate at the back of the exhaust has been removed in this pic but you can see what's inside the exhaust. 

Thanks guys. All done and I'm more than happy. It is not too loud just deeper in note.

I was sure I'd read somewhere on here about two baffle plates with dimensions etc, but I couldn't find it.

I used a smaller rod first then a larger one. Tapping with a heavy hammer rather than full pelt smashing.

The holes made doing it this way look 'factory'