Quote:
Originally Posted by rader1
The cats in the midpipe don't heat up enough to work properly, that's why the N55 doesn't even have cats in the midpipe.
On a NA car the first set of cats are typically mounted in the exhaust manifold just after the collecter.
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Hmm so basically if you run catless DPs there's no way to control emissions? I know that people have passed sniffer tests with only the OEM exhaust installed along with catless DPs, hence my wanting to try this approach of welding in the original cats.
Disappointing that they won't reach temperature, are you reasonably sure about that or guessing?