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A warm air intake is good for FE in a gasser (warmer air -> lower density -> less air in cylinder volume -> less fuel at given A/F ratio), at the cost of reduced performance.
Diesels like to be fed cold air, both for performance and FE.
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e·co·mod·ding: the art of turning vehicles into what they should be
What matters is where you're going, not how fast.
"... we humans tend to screw up everything that's good enough as it is...or everything that we're attracted to, we love to go and defile it." - Chris Cornell
[Old] Piwoslaw's Peugeot 307sw modding thread
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