This is only true on a gasoline engine which risks pre-detonation. A turbo diesel simply has reduced power when it runs lean under boost, but usually lower rather than higher EGTs. An NA injector pump won't meter fuel as accurately as one with an ALDA, but if tuned conservatively it won't put the motor at any extra risk, it just won't perform as well...

Look at the VW ecodiesel, which as sold with an NA injector pump and a turbo. They run lean under boost all the time, which improves fuel economy, reduces emissions, and reduces power. They don't melt pistons...

Tyler

Mathieu J. Cama wrote:
worse a horrible lean condition during full boost which will result in MELTING YOUR PISTONS.

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