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SolaraGuy.com • View topic - afr???

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afr???

http://www.solaraguy.com/viewtopic.php?f=23&t=51385

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afr???

PostPosted: Sun Apr 17, 2011 9:38 pm
by 1gSE
Are any of you guys seeing leaner afr's during the day compared to evenings?

Re: afr???

PostPosted: Sun Apr 17, 2011 11:06 pm
by ThurzNite
Just ordered a bluetooth obd2 dongle, will start data recording and report back when I get some good data.
Dr J

Re: afr???

PostPosted: Mon Apr 18, 2011 3:29 pm
by hskrsolara
ThurzNite wrote:Just ordered a bluetooth obd2 dongle, will start data recording and report back when I get some good data.
Dr J


I wideband would be the reliable method, pulling data from your actual exhaust.

Re: afr???

PostPosted: Mon May 02, 2011 4:37 pm
by SirThomas88
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.

Re: afr???

PostPosted: Mon May 02, 2011 4:52 pm
by 1gSE
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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