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      12-22-2018, 05:10 PM   #63
Freiheit
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Drives: 2011 Competition Coupe
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Quote:
Originally Posted by m3alabama
if you are comfortable hacking up the exhaust than you should go a step further. Cut out the secondaries and cut out the primaries. Put the secondaries welded in to replace primaries and put it all back together. This should be enough to easily avoid the CEL and give you essentially a HFC setup

Quote:
Originally Posted by karussell View Post
I was just thinking this since the secondary cats are 200 cells. i bet a good muffler shop could make quick work out of this. would it be much louder?

A few years later and no one else seemed to notice this. Has anyone done this? It seems like it would require little in labor and would put the stock HFC in the right place and save a lot of cash that could be spent elsewhere.
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