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mark houghton mark houghton is offline
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Join Date: Jul 2008
Location: Central Washington State
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Originally Posted by les_garten View Post
He is most likely going to adjust your CO at idle and that's it. "Almost" useless if you think you have any real afr issues. That's the way the Porsche manual says to do it and they way shops have done it for decades. That was before the days of the adjustable Warm up regulator, which your stock wrench may not know about.
If your WUR is operating as it should be, then setting the CO% at idle will put you in the ballpark under all operating conditions. But, the big but, is that all control systems have to be working in unison correctly or your AFR's will get out-of-whack when you stand on the go pedal. If your car has any modifications beyond stock (turbo, intercooler, muffler, headers, etc), then an adjustable WUR and AFR readings throughout the power band are the safest way to go. Put it on a dyno or install a remote wide band AFR sensor and gauge. Then drive it and tune it.
Old 10-06-2008, 04:29 PM
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