OK trying to understand how to tune my car with ATap and Edit. Have been doing some various types of logging. I realize my numbers might be slightly off but I'm curious what they are supposed to be telling me.

LTrims- Under part throttle I seem to be around 9-12 which I've heard is high. Does this mean that I am running lean under part throttle and then to compensate the PCM will dump extra fuel under WOT and make me run rich?

STrims- Why am I recording them? What are they telling me? They 0 out WOT.

O2 Sensors- They seem to be a little off. Bank 1 is reading about 905-950 at WOT and Bank 2 is reading 885-925. Why are they so different from each other? Is there a way to fix that? Also what does it mean if I am running high 900s? What about low 800s? Not sure which one is lean and which one is rich.

Your help is appreciated.

Mike B.

 

Thanks J, that's exactly what I was looking for.

Mike

 

i told that a week ago focker <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> your car is bascially a average car <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" />

ltrims could use a little tweaking on the MAF but other than that u are fine

 

Anyone?

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by buschman:
<strong>
LTrims- Under part throttle I seem to be around 9-12 which I've heard is high. Does this mean that I am running lean under part throttle and then to compensate the PCM will dump extra fuel under WOT and make me run rich?

</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Yes you are running lean under part throttle and the PCM is adding fuel and when you hit WOT the Ltrims freeze and you are running rich at WOT

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by buschman:
<strong>
STrims- Why am I recording them? What are they telling me? They 0 out WOT. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">You don't have to record your STFT... the LTFT are telling the story

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by buschman:
<strong>
O2 Sensors- They seem to be a little off. Bank 1 is reading about 905-950 at WOT and Bank 2 is reading 885-925. Why are they so different from each other? Is there a way to fix that? Also what does it mean if I am running high 900s? What about low 800s? Not sure which one is lean and which one is rich. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">That seems to be common but I wouldn't worry about your O2s until you get the LTFT into a -1 to -6 conditon so you are not adding fuel at WOT. Hi 900s indicate rich and mid 800s indicate lean.

<small>[ February 13, 2003, 12:26 PM: Message edited by: J&JsTA ]</small>