Need some MAFT help
04-24-2002, 02:40 PM
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Need some MAFT help Just hooked up the MAFT this morning. PRIOR AutoTap results were:
Aver B1LTFT (while in cells 1-19) = -0.339
" B2LTFT " " " " = -1.983
" B1O2#1 " " " 22 = 0.936
" B2o2#1 " ' " " = 0.940
Aver timing throughout was 35.58 and no KR
So, I set the base switch to F (5% lean), WOT at 0, and the dip switches all off. Took the car out for a drive, but did not reset the pcm. Then I autotapped again and got the following:
Aver B1LTFT = 14.648
" B2LTFT = 13.465
" B1O2#1 = 0.721
" B2O2#1 = 0.608
Aver timing = 36.83 and no KR
Seems like the LTRIMS were as close to zero as possible without the MAFT so I set the base back to zero. But, when I had the base at 5% lean, the O2 readings changed. If I now set the WOT switch to leaner, should the LTRIMS change also? Any comments are appreciated.
A PS - Is it necessary to reset the pcm after making changes with the MAFT and then AutoTapping?
<small>[ April 24, 2002, 04:26 PM: Message edited by: Silver99Z ]</small>
Aver B1LTFT (while in cells 1-19) = -0.339
" B2LTFT " " " " = -1.983
" B1O2#1 " " " 22 = 0.936
" B2o2#1 " ' " " = 0.940
Aver timing throughout was 35.58 and no KR
So, I set the base switch to F (5% lean), WOT at 0, and the dip switches all off. Took the car out for a drive, but did not reset the pcm. Then I autotapped again and got the following:
Aver B1LTFT = 14.648
" B2LTFT = 13.465
" B1O2#1 = 0.721
" B2O2#1 = 0.608
Aver timing = 36.83 and no KR
Seems like the LTRIMS were as close to zero as possible without the MAFT so I set the base back to zero. But, when I had the base at 5% lean, the O2 readings changed. If I now set the WOT switch to leaner, should the LTRIMS change also? Any comments are appreciated.
A PS - Is it necessary to reset the pcm after making changes with the MAFT and then AutoTapping?
<small>[ April 24, 2002, 04:26 PM: Message edited by: Silver99Z ]</small>
04-24-2002, 04:52 PM
#2
Re: Need some MAFT help Setting the base DOES affect the WOT readings, that is whay that must be set first. Then do the WOT settings. I have not seen the WOT settings affecting the Base readings.
Hope that helps.
And your Ltrims at such a low negative number, is pretty damned close to zero. So you are running just a slight touch rich.
Hope that helps.
And your Ltrims at such a low negative number, is pretty damned close to zero. So you are running just a slight touch rich.
04-24-2002, 07:15 PM
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Re: Need some MAFT help </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Xsta Z 28:
<strong>Setting the base DOES affect the WOT readings, that is whay that must be set first. Then do the WOT settings. I have not seen the WOT settings affecting the Base readings.
Hope that helps.
And your Ltrims at such a low negative number, is pretty damned close to zero. So you are running just a slight touch rich.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Thanks. I also thought the LTRIMS were pretty close to zero, but wanted to see what going 5% lean would do. Next, I'll set the WOT one step leaner and see what that does. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
<strong>Setting the base DOES affect the WOT readings, that is whay that must be set first. Then do the WOT settings. I have not seen the WOT settings affecting the Base readings.
Hope that helps.
And your Ltrims at such a low negative number, is pretty damned close to zero. So you are running just a slight touch rich.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Thanks. I also thought the LTRIMS were pretty close to zero, but wanted to see what going 5% lean would do. Next, I'll set the WOT one step leaner and see what that does. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />