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Rasta Monsta Rasta Monsta is offline
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Join Date: Oct 2006
Location: PacNW
Posts: 3,848
UTCIS and Lambda

Shaggy, my 931, is getting a digital control pressure regulator. I am wondering if I should eliminate the "lambda loop" (narrow band O2, TPS, digitally controlled frequency valve, lambda computer).

It seems like its main purposes (fine idle adjustment & WOT enrichment) won't be needed with the UTCIS. Since I am having new lines built, I am in a position to cleanly delete the frequency valve. I especially don't want a "battle of pressures" between the UT controller and lambda controller at idle.

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Old 04-20-2010, 09:26 AM
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