Which is better, lean or rich? (MAFT question)
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Le Mans Master
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From: Burlington ON
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Re: Which is better, lean or rich? (dsk888)
Anywhere around +5 on the LTFTs is good in my opinion. I have heard you are more apt to pull a degree or two more timing when your LTFTs are slightly in the positive. I would leave it where you are at.
Le Mans Master
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Re: Which is better, lean or rich? (dsk888)
Dan, were the KR values at WOT or not? Looks to me like you are good for non-WOT. I'm a rookie at this, but if I were you, I might try one click rich for WOT setting on the MAFT.
Le Mans Master
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Re: Which is better, lean or rich? (dsk888)
Allan, I'm getting some KR in both base & WOT, actually more so in the base. I just went back and checked, most of the KR occur at low rpm (900-1200), but there are a couple at ~2200 rpm. Also, the KR happened between fuel cell trims 6-13.
I went ahead and turned the WOT setting 1 click to the right to 2% rich, and left the base at 30% lean. Hope this will cure the KR problem. :seeya
I went ahead and turned the WOT setting 1 click to the right to 2% rich, and left the base at 30% lean. Hope this will cure the KR problem. :seeya
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Re: Which is better, lean or rich? (dsk888)
dsk, I will email you my work address so you can communicate better with me.
Id stay at the setting that keeps you at that +3 or so on your trims.
Its better to simply monitor WOT by looking at Throttle position. I dont try to average via a fuel cell for WOT. I just look it over to get the jist via looking at the Throttle position. When you get my email address, send me your latest trace and maft settings.
Id stay at the setting that keeps you at that +3 or so on your trims.
Its better to simply monitor WOT by looking at Throttle position. I dont try to average via a fuel cell for WOT. I just look it over to get the jist via looking at the Throttle position. When you get my email address, send me your latest trace and maft settings.
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Re: Which is better, lean or rich? (kewlbrz)
Id stay at the setting that keeps you at that +3 or so on your trims.
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Re: Which is better, lean or rich? (allanlaw)
Id stay at the setting that keeps you at that +3 or so on your trims.
Shawn, would you ignore his KR at low rpm, and if not, what would you suggest?
Shawn, would you ignore his KR at low rpm, and if not, what would you suggest?
dsk, are you lugging the engine when you getting KR, what gear and vehicle speed, and rpm? What Octane fuel?
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Le Mans Master
Joined: Sep 1999
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Re: Which is better, lean or rich? (kewlbrz)
I was under the impression he got KR when he was at 30% lean setting, but he backed down to 25%. Mabey I misread. No I wouldnt ignore KR at non WOT.