C63 AMG (W204) 2008 - 2015
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Any member has primary and sec cat?

Old Mar 29, 2013 | 04:14 AM
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Any member has primary and sec cat?

Before I go to my local custom exhaust shop,does any member has a video of the 4 cats removed but resonator?!!!
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Old Mar 29, 2013 | 04:53 AM
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This is with long tube headers.... but you get the idea.

All catless with x-pipe and resonator

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Old Mar 29, 2013 | 02:24 PM
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It's interesting how your dash looks with ESP off. When I do that, my center dial lights up with "ESP OFF" and you can't change it to any other info. It's so annoying. Of course, I know it's off...you can't accidentally hold down the ESP button for 5+ seconds on accident.
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Old Mar 29, 2013 | 03:20 PM
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Good luck removing the primary cats.
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Old Mar 29, 2013 | 03:24 PM
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Is a p.i.t.a?
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Old Mar 29, 2013 | 06:36 PM
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You would need to do some heavy exhaust mods and some tuning for the increase in flow. Rear o2 sensors are going to throw a CEL that needs to be turned off.
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Old Mar 29, 2013 | 06:48 PM
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If you need emissions inspections I highly recommend leaving the primaries in. The car is quite loud even just removing secondaries and resonator which is also far easier. There is a recent thread on that.
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Old Mar 29, 2013 | 06:49 PM
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I have an xpipe already emissions no biggie here in miami
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Old Mar 29, 2013 | 10:45 PM
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Do yourself a favour. Invest in long tube headers and let that be your only exhaust mods.
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Old Mar 30, 2013 | 05:35 AM
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Originally Posted by Merc63
Do yourself a favour. Invest in long tube headers and let that be your only exhaust mods.
+63 to this


I keep telling all the guys who are lopping off their secondary cats just to stop adding the little 5-8HP adders. Do it once and enjoy the 40-50WHP!
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Old Mar 30, 2013 | 08:40 AM
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This is what all 4 cats removed, an x-pipe, long tube headers, and resonators sound like.

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Old Mar 30, 2013 | 08:42 AM
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Thanks everybody for their input
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