No CEL (have not checked if there are 'hidden' codes - sorry I don't know the term used when there is a code in the history but no light on the dash). I thought maybe the idle is affected when I depress the clutch, but I never considered the brake involvement. I'll check the connections (as the throttle body was cleaned in Feb) and clean the MAF to see if that changes anything.
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2001 Boxster S, Guards Red
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