ECMTuning - wiki

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<h1>AEMWB Logging Suggestion</h1> <div class="level1"> <p> A number of people have various problems with the AEMWB display routine. There are a number of reasons for this, but most seem to revolve about the AEM's weak analog driver circuitry. It's simply unable to properly drive a number of ECU inputs. </p> <p> One fix is to buffer the ECU input with <a href="http://www.ecmtuning.com/product_info.php?cPath=26&products_id=39" class="urlextern" title="http://www.ecmtuning.com/product_info.php?cPath=26&products_id=39" rel="nofollow">one of these</a>. In doing so, the AEM is not required to drive the ECU input directly. </p> <p> People still seem to get varying results, though. So another fix is to simply not use the built-in AEM WB display routines and instead define your own using the <a href="/wiki/doku.php?id=linearitems" class="wikilink1" title="linearitems">LinWideband display item</a>. To use that, you change the pin assignment to be Linear wideband and then manually adjust the mapping. </p> <p> One user found the following settings to work well on his own AEM WB install: </p> <pre class="code">Min Voltage: 0.0 Min lambda: 0.65 (gasoline A/F ratio of 9.55:1) Max Voltage: 4.99 Max lambda: 1.32 (gasoline A/F ratio of 19.43:1) </pre><p> </p> </div>