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      03-19-2018, 06:59 AM   #3
pbonsalb
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Drives: 18 F90 M5, 99 E36 M3 Turbo
Join Date: Feb 2011
Location: New England

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You might get a temporary bump beyond the 5-10 rwhp that comes from leaning out BMWs rich mixture by clearing adaptions that have been retarding timing from the stock 32 degrees, but it won’t last unless you begin using a higher octane, move to a colder region, replace old plugs with new or replace weak coils with new, and if the increase does last it is for the other changes and not the tune.
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