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Boost and Timing Corrections
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09-05-2015, 09:40 AM | #1 |
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Boost and Timing Corrections
Hey guys,
I ran (4) logs this morning. I'm running 93 pump gas. It was 72*F and my AIT's never crossed 100. That said, it seems that after peak boost roughly 5,000 or so RPMs, the car is pulling timing. http://www.datazap.me/u/jwebb335xi/l...-16&mark=59-78 http://www.datazap.me/u/jwebb335xi/0...0-13&mark=8-20 I'm going to add a gallon of E85 and log again in the morning, but I'd love comments if you all have them.
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09-05-2015, 09:57 AM | #3 | |
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09-05-2015, 12:34 PM | #5 |
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E85 is the most cost effective octane booster, couldn't agree more@!!!!!!!!
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09-05-2015, 02:14 PM | #6 | |
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The first log/picture is for a 3rd gear in 4th pull. http://www.datazap.me/u/jwebb335xi/5...2-13&mark=19-7 The second starts in 2nd gear, through 3rd and into 4th. http://www.datazap.me/u/jwebb335xi/8...7-8-9-10-12-13 Timing appears to be solid with just a bit of e85 added. I noticed my gauge showed some knock voltage, which I set during this run and never have used before.. The number was very small, but I don't really know what it means.
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09-05-2015, 02:23 PM | #7 | |
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http://www.datazap.me/u/jwebb335xi/m...-6-7-8-9-13-16
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09-05-2015, 03:02 PM | #8 |
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Timing looks good (I'm on mobile, but as far as I can tell anyway)!
My car has timing corrections on any brand 93, regardless of map, new plugs, blah blah blah, but with even 1-2 gallons of E, she holds all the timing that's requested. |
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09-05-2015, 04:13 PM | #9 |
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That's exactly what i experience, i can run a fairly aggressive timing curve up to 10.5 or even 11 degrees up top with just a gallon or two or E and my timing is clean, really amazing stuff@!!!!!!!!!!!!!!!!
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09-05-2015, 04:54 PM | #10 | |
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09-05-2015, 04:58 PM | #11 | |
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09-05-2015, 05:59 PM | #12 |
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Drives: 2013 335is E93 6MT
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No, I have an aggressive custom tune, and, at least for my car, if I want the boost, I have some negative timing corrections -- which E85 completely smooths out. Somebody called it "band-aiding" your tune, as if it were a bad thing, but the other option to get rid of the timing corrections would be to lower the boost. Adding E85 is a no brainer.
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