Headers and emissions

["Storhok, Eric (E.M.)" <estorhok@domain.elided>]

I was going to go into a long diatribe about the whys and whatnots about this subject, but James Montebello hit it right on:  as a review-
1) headers can cause a delay in the catalyst lighting off, may still even pass a garage test, but most of your cars emissions are while the catalyst is not working (like 90% of it)
2) even if they did NOT delay, the process to certify aftermarket parts can be difficult, especially in California.  You may not like this, but you do live there.

Eric Storhok
Core Emissions and Fuel Economy Team
Advanced Powertrain Engineering
(313)33x75011
MD 35, FPC-B
Ford Motor Company
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