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Forced Induction & Engine Management
How lean is lean?
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<blockquote data-quote="^pomen_GTR^" data-source="post: 1064133267" data-attributes="member: 92301"><p>that depend on which factory tuning...i suspect saying that was applicable for american cars with carbies... <img src="https://zerotohundred.com/forums/styles/default/xenforo/smilies/adore.gif" class="smilie" loading="lazy" alt=":adore:" title="adore :adore:" data-shortname=":adore:" /></p><p></p><p></p><p>well like example of newer generation proton (campro+siemens ecu) mostlikely the tuning was on the very edge of lean...i've read somebody wrote that he dynoed a stock campro car with 16:1 afr....</p><p></p><p>most boosted ride would opt for richer 13:1 afr at WOT in order to gain highest power and keeping the engine part such as piston and turbine cool enough..(too lean could result catastrophic piston/valve/turbo failure)</p><p></p><p>if daily tuned ride i would say 14:7 afr was among the best and safer choice...which balance the fc and temperature....</p></blockquote><p></p>
[QUOTE="^pomen_GTR^, post: 1064133267, member: 92301"] that depend on which factory tuning...i suspect saying that was applicable for american cars with carbies... :adore: well like example of newer generation proton (campro+siemens ecu) mostlikely the tuning was on the very edge of lean...i've read somebody wrote that he dynoed a stock campro car with 16:1 afr.... most boosted ride would opt for richer 13:1 afr at WOT in order to gain highest power and keeping the engine part such as piston and turbine cool enough..(too lean could result catastrophic piston/valve/turbo failure) if daily tuned ride i would say 14:7 afr was among the best and safer choice...which balance the fc and temperature.... [/QUOTE]
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How lean is lean?