It's hard to find any info on exactly when and how this works, but here are a few more scraps.
- Supposedly this valve can partially block the intake to allow more EGR into the engine.
- The valve closes the intercooler when the diesel particulate filter needs to be burned out. Allowing warmer air into the engine helps raise the exhaust gas temperatures.
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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