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Old 10-08-2009, 10:35 PM   #25 (permalink)
Christ
Moderate your Moderation.
 
Join Date: Nov 2008
Location: Troy, Pa.
Posts: 8,919

Pasta - '96 Volkswagen Passat TDi
90 day: 45.22 mpg (US)
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Can you check O2SAT? Or if not, can you get a signal reading from the O2 sensor before/after while you're running, and one test signal after fresh start with it unplugged, one fresh start with it plugged in. 4 total numbers.

Also - if you have a way to see your vacuum readings, do me a favor, engine brake at about 4k rpm, no throttle, and tell me what your vacuum readings are. That's a side project, though.
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