mikey4410 Posted November 4, 2013 Share Posted November 4, 2013 Anybody elses changed much with the cold weather ??I know its to be expected and what not.Mine about 3 weeks ago was 11.00 @ wotNow its 11.3 wof. Quote Link to post Share on other sites
maddox710 Posted November 7, 2013 Share Posted November 7, 2013 Much colder dense air Quote Link to post Share on other sites
mikey4410 Posted November 7, 2013 Author Share Posted November 7, 2013 yeap indeed,makes it slightly leaner mixture.Guess i am the only one,lol Quote Link to post Share on other sites
JayJ Posted November 7, 2013 Share Posted November 7, 2013 Noticed a leaner mixture also with mine. Temp has been dropped about 5 degrees from Tuesday when I was last driving. Quote Link to post Share on other sites
GP82 Posted November 8, 2013 Share Posted November 8, 2013 Is this from a stock ecu? Quote Link to post Share on other sites
JayJ Posted November 8, 2013 Share Posted November 8, 2013 I have JAM. Still runs quite rich, but leaner than it used to. Quote Link to post Share on other sites
GP82 Posted November 8, 2013 Share Posted November 8, 2013 Okay thanks, would have thought the stock or Plug and play ecu will compensate for the extra oxygen and keep the A/F consistant so as not to go leaner. Quote Link to post Share on other sites
AdamB Posted November 8, 2013 Share Posted November 8, 2013 It's hard to say exactly what the ecu will do in closed loop unless you were the code programmer Quote Link to post Share on other sites
GP82 Posted November 8, 2013 Share Posted November 8, 2013 For sure, no doubt about that, but i was just questioning why the ecu would let the cylinder mixture run leaner when there is more oxygen being introduced. I guess it's not much to worry about and the A/F could be affected by 101 number of factors. Quote Link to post Share on other sites
AdamB Posted November 8, 2013 Share Posted November 8, 2013 It will let it run as lean as the engine will allow until knock is detected, only then will the ecu pull timing to save the engine, although this very rarely happens because the engines are such low compression anyway.The leaner the mixture the more torque you make (up to a point), so there's no need for the ecu to compensate for anything. That's my take on things anyway Quote Link to post Share on other sites
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