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Log analysis

Magarrett

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Feb 13, 2024
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2018 gt2 3.3, afe intakes, mbrp stainless catback, colder plugs gapped to burger recommendation. 3 times now I’ve hit some sort of cut and it’s defaulted me to map 0. Once was at the drag strip about half track, twice was on a private road doing about 120mph. Ran a couple logs tonight. Thoughts?
 

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Cylinders 2 & 3 have a fair amount of timing correction (the 4.5s and 6.8s). What are you running for fuel?

If you want to learn more about reading logs, here's a post with my approach, which also links to BMS's more detailed explanations:

 
Always running 92 or 93 octane. I thought those timing numbers looked out of wack. Am I going to have to actually get a log of the actual “shutdown” to map 0. I’ve tried a few times but can’t get it replicate when I’m trying to log it. It’s happened and 100 mph plus all three times kinda sketchy to try and log it.
 
How about a few pulls on Map 1 to see if it's stable or still pulling timing? And do you have E85 available? If so, you can add 4-5 gallons per full tank (or 1.1 - 1.25gal per quarter tank, with the rest 93) to get a mix around E30 with octane around 96.5.
 
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