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S500/500SEL/300E
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Discussion Starter #1
My middle cats are both (both of them) some people replace them with universal cats, magnaflow, ect... can I just cut them and replace them with a straight pipe or will it mess up performance/engine/ect.. we have no vehicle inspection laws, the car is rusting out and has 188k on it. Anyone?
 

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08 ml320 cdi,slk 230,01 boxster S,04 carrera911, 99 S320,67 GT350mustang,02G500L,96 s600 w140
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YUP JUST MAKE SURE YOU INSTALL back the sensors
 

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Discussion Starter #4
Has anyone actually done this? What size pipe do I need? It doesn't look like there are any sensors anywhere near there... I am wrong?

 

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2001 E55 AMG
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Preferably a piece of pipe that will just slide over nicely and either weld or clamp on.....You're right no sensors..no problem......you can cut the cats open and remove the insides and weld back up,but it sounds bad....better to just use pipe.
 

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Discussion Starter #6
I was going to take the cats to the recycling center and get a hundred odd bucks for them.
 
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