How do you know if/when you need diverter valves?
Any difference in these three, other than the price? Any recommendation on one brand over another? I notice that they're no longer being listed as for sale by Bosch, like commonly referenced here. No additional parts needed other than two of these, correct?
http://www.ecstuning.com/Search/SiteSearch/710n/ES581/
http://www.ecstuning.com/Search/Site...710n/ES250636/
http://www.ecstuning.com/Search/Site...10n/ES2597708/
Mine are honking at .1-.2 bar, but not at WOT... time for them to go. They also gave me a secondary air pump error (that fixed itself, somehow)
http://www.ecstuning.com/Search/SiteSearch/710n/ES581/
http://www.ecstuning.com/Search/Site...710n/ES250636/
http://www.ecstuning.com/Search/Site...10n/ES2597708/
Mine are honking at .1-.2 bar, but not at WOT... time for them to go. They also gave me a secondary air pump error (that fixed itself, somehow)
those are all ya need @ 47 ea. sometimes we get away easy.. others times, not so much 
those all look the same. i imagine they are made under license? or even mfg by bosch under license if german.

those all look the same. i imagine they are made under license? or even mfg by bosch under license if german.
Last edited by '02996ttx50; Aug 2, 2013 at 06:58 AM.
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