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Did Anybody dyno their M550?
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03-28-2020, 05:33 AM
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NeilsMercer
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Drives: bmw M550i
Join Date: Mar 2020
Location: Mercer Island, WA
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Stock was 421.2 whp and 503ftlb wtq
After stage1 tuning with full exhaust system
518.8 whp and 662 wtq
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