Timing Advance Missing
Thread Starter
Staging Lane
Joined: Jun 2002
Posts: 67
Likes: 0
From: Milford, MA
Timing Advance Missing I was breezing through some ATAP last night and noticed that am am getting about 4 degrees less timing advance at WOT then I was when I dynoed the numbers in my sig. I am only seeing 22 degrees of triming at the very top of the RPM range as compared to the 25 - 27.5 degrees I was getting on the dyno. I have richened things up quite a bit as of late and my ATAP logs confirm this. Will leaning things out a bit get this timing back? Right now my MAFT settings are BASE: 15% rich and WOT: 6% rich and that is producing the following:
LTTRIMS 1-19 AVG: -2.00+
O2 AVG: .90
Any advice???
LTTRIMS 1-19 AVG: -2.00+
O2 AVG: .90
Any advice???
TECH Addict
Joined: Nov 2001
Posts: 2,593
Likes: 0
From: TEXAS
Re: Timing Advance Missing It could be due to different driving conditions. Was there a temperature change? You measured once on a dyno, and the other while driving? Possible differences in load while driving? It could be so many things...
Thread Starter
Staging Lane
Joined: Jun 2002
Posts: 67
Likes: 0
From: Milford, MA
Re: Timing Advance Missing </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by felton316:
<strong> It could be due to different driving conditions. Was there a temperature change? You measured once on a dyno, and the other while driving? Possible differences in load while driving? It could be so many things... </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Actually YES I changed my stat last week and my car runs about 30 degrees cooler on average. I didn't expect to have to change my MAFT settings becasue of a cooler stat.
<strong> It could be due to different driving conditions. Was there a temperature change? You measured once on a dyno, and the other while driving? Possible differences in load while driving? It could be so many things... </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Actually YES I changed my stat last week and my car runs about 30 degrees cooler on average. I didn't expect to have to change my MAFT settings becasue of a cooler stat.
