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	<id>https://m232.org/index.php?action=history&amp;feed=atom&amp;title=Safety_limits</id>
	<title>Safety limits - Revision history</title>
	<link rel="self" type="application/atom+xml" href="https://m232.org/index.php?action=history&amp;feed=atom&amp;title=Safety_limits"/>
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	<updated>2026-05-05T15:56:19Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://m232.org/index.php?title=Safety_limits&amp;diff=90&amp;oldid=prev</id>
		<title>PRJ: /* Description */</title>
		<link rel="alternate" type="text/html" href="https://m232.org/index.php?title=Safety_limits&amp;diff=90&amp;oldid=prev"/>
		<updated>2017-11-05T18:57:29Z</updated>

		<summary type="html">&lt;p&gt;&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Description&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left diff-editfont-monospace&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 18:57, 5 November 2017&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l14&quot; &gt;Line 14:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 14:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;There are two limiters. The initial one, if exceeded for a certain amount of time, will turn off boost control and cut fuel to all cylinders, also logging an overboost code.&amp;lt;br/&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;There are two limiters. The initial one, if exceeded for a certain amount of time, will turn off boost control and cut fuel to all cylinders, also logging an overboost code.&amp;lt;br/&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;After that, a second limiter is used, without a delay - if you exceed the load specified, fuel is instantly cut.&amp;lt;br/&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;After that, a second limiter is used, without a delay - if you exceed the load specified, fuel is instantly cut.&amp;lt;br/&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;These limiters are essential to set, because &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;the &lt;/del&gt;will save your engine from destruction in case a wastegate line gets damaged for example. Because on some highly tuned cars the LOAD can exceed 255, the values in the maps have been multiplied by 10 compared to standard.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;These limiters are essential to set, because &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;they &lt;/ins&gt;will save your engine from destruction in case a wastegate line gets damaged for example. Because on some highly tuned cars the LOAD can exceed 255, the values in the maps have been multiplied by 10 compared to standard.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt; &lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt; &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;===Maps===&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;===Maps===&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;*Max calculated load - Irrelevant in prjmod.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;*Max calculated load - Irrelevant in prjmod.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>PRJ</name></author>
	</entry>
	<entry>
		<id>https://m232.org/index.php?title=Safety_limits&amp;diff=89&amp;oldid=prev</id>
		<title>PRJ: Created page with &quot;==Rev limit== ===Description=== The factory revlimiter is sequential fuel cut. With prjmod an ignition cut limiter is also provided. ===Maps=== *Rev limiter - fuel cut - start...&quot;</title>
		<link rel="alternate" type="text/html" href="https://m232.org/index.php?title=Safety_limits&amp;diff=89&amp;oldid=prev"/>
		<updated>2017-11-05T18:57:09Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot;==Rev limit== ===Description=== The factory revlimiter is sequential fuel cut. With prjmod an ignition cut limiter is also provided. ===Maps=== *Rev limiter - fuel cut - start...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;==Rev limit==&lt;br /&gt;
===Description===&lt;br /&gt;
The factory revlimiter is sequential fuel cut. With prjmod an ignition cut limiter is also provided.&lt;br /&gt;
===Maps===&lt;br /&gt;
*Rev limiter - fuel cut - start rpm - Main fuel cut limiter. Max RPM value it to allow.&lt;br /&gt;
*Rev limiter - fuel cut - engine speed exceeded - RPM threshold to throw overrev DTC.&lt;br /&gt;
*Rev limiter - fuel cut - cyl 1-5 - How many cylinders to force off sequentially. If you set it somewhat lower, you can have a softer cut. It can start cutting one or two cylinders before it starts aggressively cutting everything.&lt;br /&gt;
*Rev limit - spark cut - set this lower than the fuel cut limiter to use the spark cut limiter. Not recommended with ceramic catalytic converters.&lt;br /&gt;
*Rev limit - spark cut - knock control disable - Because of the fuel explosions in the exhaust the ECU will sense knock, if knock control is not disabled. Set this value to 80-120 RPM lower than the actual limiter, so that when it is banging on the limiter the knock control is off and does not cause false positives.&lt;br /&gt;
*VMax limit - Top speed limiter, sequential fuel cut, just takes speed instead of RPM as control variable. Useless if you do not have VSS.&lt;br /&gt;
&lt;br /&gt;
==LOAD limit==&lt;br /&gt;
===Description===&lt;br /&gt;
There are two limiters. The initial one, if exceeded for a certain amount of time, will turn off boost control and cut fuel to all cylinders, also logging an overboost code.&amp;lt;br/&amp;gt;&lt;br /&gt;
After that, a second limiter is used, without a delay - if you exceed the load specified, fuel is instantly cut.&amp;lt;br/&amp;gt;&lt;br /&gt;
These limiters are essential to set, because the will save your engine from destruction in case a wastegate line gets damaged for example. Because on some highly tuned cars the LOAD can exceed 255, the values in the maps have been multiplied by 10 compared to standard.&lt;br /&gt;
===Maps===&lt;br /&gt;
*Max calculated load - Irrelevant in prjmod.&lt;br /&gt;
*Fuel cut - Hard load limit - If the LOAD exceeds the value in this map for the specified time, N75 is forced to zero, fuel is cut to all cylinders, fault code thrown and 2nd map activated.&lt;br /&gt;
*Time for LOAD to exceed cut for trigger - Debounce time for how long the LOAD must be over the threshold specified to cause limp mode and fuel cut.&lt;br /&gt;
*Fuel cut - MAF error, limp mode - Secondary fuel cut which gets activated once the first fuel cut is hit. It has no delay and it is instant. Recommend setting a conservative value, because if you are hitting it, most likely something is really wrong with your hardware.&lt;/div&gt;</summary>
		<author><name>PRJ</name></author>
	</entry>
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