ArizonaZ Posted June 11, 2009 Share Posted June 11, 2009 I just finished installing my megasquirt on my 260Z with the E88 head. I have gotten it to run and idle quite well and it will rev nicely. The problem im having is that it wont sustain any RPM above idle. If I try to give it a constant throttle position the duty cycle will decrease and it will bog down and die. Here is a datalog of when it happens, its about 3/4 of the way through. Is this something I can fix in megatune or is it my injectors? Data Log.zip Quote Link to comment Share on other sites More sharing options...
Matt Cramer Posted June 11, 2009 Share Posted June 11, 2009 I noticed one reset, that's often a noise issue and needs to be fixed. Here's what happened when the duty cycle dropped. At one point you had the RPM dip below 300, which put the MS in cranking mode. When the RPM came back up, the afterstart enrichment kicked in for a while, and that's something that adds fuel but then tapers off quickly. Quote Link to comment Share on other sites More sharing options...
ArizonaZ Posted June 11, 2009 Author Share Posted June 11, 2009 I have been getting a few resets every now and then, im using a shielded wire for the RPM signal. Do I need to shield it some more? Quote Link to comment Share on other sites More sharing options...
Matt Cramer Posted June 12, 2009 Share Posted June 12, 2009 It's probably not the RPM signal wire that's noisy. I'd first try beefing up the grounds. Quote Link to comment Share on other sites More sharing options...
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