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Simple question about the afr error histo #7

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Old 04-29-2016, 03:17 PM
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Default Simple question about the afr error histo #7

http://michigansnowmobiler.com/hptun...ons%20rev2.pdf

Following this tuning guide, knowing its kinda old, I see in step #19 I need to create a Histogram. Well, I'm pretty sure its built into HPT 2.24 (histo#7), but my question is, do I need to add the filter to omit data less than 14.6?

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Old 04-29-2016, 03:53 PM
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Nevermind, I'll add it anyway. It seems that filter just omits any PE values if I get into PE.

Should I push PE up to say 65% TPS so Its less likely to trip? (for logging only)
Old 04-29-2016, 04:22 PM
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I just logged a very short run to see if I'm doing this correctly. Am I actually short on fuel by %20+ percent in some areas??! Or did I set this up wrong?
Attached Files
File Type: cfg
AfrErrorVsVE.cfg (2.5 KB, 114 views)
File Type: hpl
VEtuneLog1.hpl (122.3 KB, 79 views)
Old 04-29-2016, 08:51 PM
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Originally Posted by Justhereforinfo
Am I actually short on fuel by %20+ percent in some areas??! Or did I set this up wrong?
Yes, you probably are short of fuel by 20% in some areas. Your VE table does look very low in some areas, so make the adjustments and do another log. Just remember to adjust the VE by half the reported error.
Old 04-30-2016, 08:36 AM
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I am assuming I should not touch the VE table until AFTER we finish the injector tuning...?

I'll leave it as is for the next log. (8)



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