Watson Posted April 12, 2014 Share Posted April 12, 2014 (edited) Real quick, the car runs well while the engine is cold/warming up but leans out a lot at running temperatures despite an extreme fuel increase in the VE table. Also, there is an intermittent fuel cut that I can't quite figure out. I have also tried adjusting the VE table with and without O2 correction and I still have a lean mixture. Please see the video for more information. Edited April 12, 2014 by Watson Quote Link to comment Share on other sites More sharing options...
NewZed Posted April 13, 2014 Share Posted April 13, 2014 You might summarize the video in words. 3:47 is a long time. Curious, you can see injector duty cycle right? What does it do? Is there lots left? Then there's always the old basic of fuel pressure. Might not be an MS tuning issue at all, just the typical Z fuel supply problem. The intermittent fuel cut, if you mean engine loses fuel supply for no apparent reason, would fit the crud-in-the-tank scenario. Quote Link to comment Share on other sites More sharing options...
Watson Posted April 13, 2014 Author Share Posted April 13, 2014 It looks like it may in fact be a tuning issue. The PW just drops off causing the fuel cut. But I wonder what would cause the PW to drop to zero... Log and tune attached if anybody would like to take a look at it. Watson Log and Tune.zip Quote Link to comment Share on other sites More sharing options...
Matt Cramer Posted April 14, 2014 Share Posted April 14, 2014 You have the decel fuel amount set to 5%. This is a multiplier, so 100% is no fuel cut - try setting the decel fuel amount to 100% and see if that helps. Quote Link to comment Share on other sites More sharing options...
Watson Posted April 15, 2014 Author Share Posted April 15, 2014 Thank you very much, Matt Cramer! That did the trick! I also swapped my 160 degree thermostat for a 180 so the car could actually get up to temperature and now I can successfully utilize the the VE table and O2 correction along with Auto Tune. Everything is moving right along. Thanks. Quote Link to comment Share on other sites More sharing options...
AkRev Posted April 16, 2014 Share Posted April 16, 2014 Just a note, you can run tunerstudio's auto tune with a 160 thermostat. To do so, please go to advance settings (the tab next to Status in the auto tune window http://i603.photobucket.com/albums/tt119/isacaraujo/megasquirt/02c31d62.gif) and update the minimal CTL. Quote Link to comment Share on other sites More sharing options...
Watson Posted April 17, 2014 Author Share Posted April 17, 2014 Just a note, you can run tunerstudio's auto tune with a 160 thermostat. To do so, please go to advance settings (the tab next to Status in the auto tune window http://i603.photobucket.com/albums/tt119/isacaraujo/megasquirt/02c31d62.gif) and update the minimal CTL. You're right, but that in conjunction with a three row aluminum radiator means its very hard to get past and stay past 160 degrees. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.