ECMTuning - wiki

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<h1>SD Options - No IAT</h1> <div class="level1"> <p> You disable IAT compensation while running SD by setting the <b>SDTempWeighting </b> table in direct access to all zero. This removes IAT compensation while retaining basic coolant-based compensation. </p> <p> If you choose not to run an IAT sensor, then you only need a MAP sensor to run SD. We have two MAP sensors available on our website: </p> <p> <a href="http://www.ecmtuning.com/product_info.php?cPath=28_30&products_id=47" class="urlextern" title="http://www.ecmtuning.com/product_info.php?cPath=28_30&products_id=47" rel="nofollow">GM-style</a>- Provides a general-purpose port-style nipple interface you can run a simple vacuum line to. </p> <p> <a href="http://www.ecmtuning.com/product_info.php?cPath=28_30&products_id=66" class="urlextern" title="http://www.ecmtuning.com/product_info.php?cPath=28_30&products_id=66" rel="nofollow">Mitsubishi-style</a>- Mounts in place of a factory 2G MDP sensor on a factory 2G-style intake manifold. </p> <p> Both are the same 4-bar sensor internally, so there's no decision there. </p> </div> <h3>GM-style MAP with no IAT</h3> <div class="level3"> <p> If you're running a GM-style MAP with no IAT sensor, you'll still need to decide how you want to wire the MAP sensor into your harness. You can use our <a href="http://www.ecmtuning.com/product_info.php?cPath=26&products_id=52" class="urlextern" title="http://www.ecmtuning.com/product_info.php?cPath=26&products_id=52" rel="nofollow">SD Cable</a> if you want a plug-n-play solution. You'll just leave the IAT connector unused. </p> <p> Or you can wire the MAP sensor into the wiring harness using our pig tail. The red wire goes to +5v, the black wire goes to sensor ground and the blue wire goes to whichever <a href="/wiki/doku.php?id=externalsensorinput" class="wikilink1" title="externalsensorinput">ECU input</a> you've chosen for the MAP. The most common is the baro input, but that depends on a few other decisions like whether you're going to retain the stock MAF while dialing in the SD VE table. Pin out information can be found on our <a href="/wiki/doku.php?id=ecuwiringinformation" class="wikilink1" title="ecuwiringinformation">ECU wiring information</a> page. </p> </div> <h3>Mitsubishi-style MAP with no IAT</h3> <div class="level3"> <p> The Mitsubishi-style MAP plugs directly into your 2G MDP harness connector. The MAP sensor bolts onto the intake manifold in place of the <a href="http://www.ecmtuning.com/images/forums/gm3barinstall/map_unplugged.jpg" class="urlextern" title="http://www.ecmtuning.com/images/forums/gm3barinstall/map_unplugged.jpg" rel="nofollow">factory MDP sensor</a>. So make sure you're either running a factory 2G DSM intake manifold or that your manifold has been adapted with this flange. </p> </div>