Differences

This shows you the differences between two versions of the page.

--- v3litefirmwarechangelog [2013/10/09 07:41]
twdorris
+++ v3litefirmwarechangelog [2014/03/10 13:15]
twdorris [3.28.106 (03/10/2014)]
@@ Line 9: / Line 9: @@
+===== 3.28.105 (03/10/2014) =====
+  * Added support for a user-editable minimum injector pulsewidth. This value can be used to prevent the ECU from attempting to operate the injector outside of its linear areas of flow. Also added functionality to disable fuel trim lean out when you've already reached the minimum injector pulsewidth. Defining the minimum injector pulsewidth somewhere just below the pulsewidth typically seem at idle on a fully warmed engine seems to help smooth out a number of transitional cases where IPW momentarily dips into non-linear areas of operation as happens sometimes when rolling to a stop with large injectors. If the injectors are large enough, it's even possible to get into a situation where you're operating the injector outside its linear range even at idle! So you may find that you need a minimum IPW so high that your typical idle is at a constant (minimum) pulsewidth.
 ===== 3.26.72 (10/09/2013) =====
-  * Added "cranking fuel cut" feature to EVO1-3 chips (was already in other versions).  When cranking the engine with the throttle to the floor, ECMLink cuts fuel to provide a way of clearing out a flooded engine.  The ECU does need to "see" a low throttle angle some time before cranking or else it will flag the TPS as bad and then disable the cranking fuel cut feature.  So floor the throttle only when you're just about to start cranking.
+  * Added "cranking fuel cut" feature to EVO1-3 chips (was already in other versions). When cranking the engine with the throttle to the floor, ECMLink cuts fuel to provide a way of clearing out a flooded engine. The ECU does need to "see" a low throttle angle some time before cranking or else it will flag the TPS as bad and then disable the cranking fuel cut feature. So floor the throttle only when you're just about to start cranking.
   * Reduced the minimum injector pulsewidth in order to support larger injectors at idle.
-  * Fixed bug in cranking fuel cut that required cranking for a period of time without the throttle to the floor first before pressing the throttle down to activate the cut.  Now the check for low throttle angle takes place whether you're cranking or not.  And once flagged good it remains good until the next ECU restart.
+  * Changed cranking fuel cut not to activate the cut unless less than WOT is seen as some point after ECU power-up. This prevents a bad TPS signal from inadvertently triggering cranking fuel cut.
 ===== 3.24.152 (04/25/2012) =====

ECMTuning - wiki

User Tools

Site Tools

Differences

Page Tools