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Originally Posted by Glowplug
So basically what we are doing here is creating a mechanical/manual wastegate control so we can delete the egr without the EDS cutting out boost via the wastegate due to the computer sensing no EG to re-circulate ?
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That is exactly correct. It also solves mysterious problems where the computer kills boost for unknown reasons. These problems can be a real pain to diagnose and fix. Removing the computer controlled wastegate entirely, and reverting back to the pre-1990 fully mechanical setup, takes care of all that in one fell swoop.
Quote:
Originally Posted by Glowplug
Or does installing a manual/mechanical wastegate automatically cut out the Exhaust gas re-circulation, and therefore not require an EGR block off plate ?
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Well, no, not really. You'll still need to disable the EGR by at least disconnecting the vacuum line. And the EGR valve itself could leak internally (not likely, but it has happened). A block-off plate is still the best solution, but if you need to pass a visual smog check, all the smog apparatus can remain in place... just plug the vacuum source line above the vac pump that feeds the transducers, so they will no longer operate the EGR or flapper valve.
