That last picture you post is the bcs. If you have a manual boost controller or some other form of controlling boost, no its not need. That's the boost controller that's controlled by the ecu. If you unplug it and have no boost controller, you will only get wastegate boost, around 8psi.
You can go on autozones web site and they have all the recall info. I had mine done last year, they did both of mine. Their statement to me was they replace whatever ones are bad. Both of mine were bad.
David, how would you redistill it? Are you boiling the ethanol after collecting it with some kind of diluting or adding it to another batch that's been fermented? Or just taking the almost pure ethanol and just boiling it and collecting the vapors/remains?
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