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Stock ecu AFRs, how bad were yours pre-tuning?

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Old 02-25-2016, 06:31 PM
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After perusing some old threads, I found this representation of stock AFR targets and timing map:


Attached Thumbnails Stock ecu AFRs, how bad were yours pre-tuning?-60793d1354032455-lets-discuss-spark-advance-compare_oem_timing_vs_afr.jpg  
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