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afr???

afr???

Postby 1gSE » Sun Apr 17, 2011 9:38 pm

Are any of you guys seeing leaner afr's during the day compared to evenings?
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Re: afr???

Postby ThurzNite » Sun Apr 17, 2011 11:06 pm

Just ordered a bluetooth obd2 dongle, will start data recording and report back when I get some good data.
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Re: afr???

Postby hskrsolara » Mon Apr 18, 2011 3:29 pm

ThurzNite wrote:Just ordered a bluetooth obd2 dongle, will start data recording and report back when I get some good data.
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I wideband would be the reliable method, pulling data from your actual exhaust.
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Re: afr???

Postby SirThomas88 » Mon May 02, 2011 4:37 pm

The only thing I can think of would be that the air in the evenings is cooler, and that could affect your AFR. However cooler air is denser, and so you should be running more lean in the evenings, at least I would think so. Though I wouldn't think it would be too noticeable of a change.
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Re: afr???

Postby 1gSE » Mon May 02, 2011 4:52 pm

thats what I figured, but I'm richer at night. I dunno wtf is going on. Its gotta be something with the ecu and the fic. Back to back runs are pretty consistent, but day to day is almost always as much as .5
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