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beepbeep beepbeep is offline
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Join Date: Jun 2001
Location: Sweden
Posts: 5,565
This is typical worn CIS behaviour. It runs pig rich then leans a bit on the top.

First, I suggest getting a AuxBox or RPM-converter so you can log both RPM, boost and lambda. Watching a display while driving is a great way to kill yourself.

Once you can interprete graphs offline, you can do something to fix rich condition you obviously have.

AFR of 10:1 at boost is way to rich. You are loosing power, using excessive amounts of fuel and dilution the oil. Checking control pressure is a good way to go, then maybe fitting adjustable WUR or RPM-switch to get rid of rich part.

Ideally, you would want something like 12.2-12.6 at WOT and full boost and around 14.6-14.7 at no load.
Thank you for your time,
Old 04-08-2008, 06:13 AM
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