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Old 11-29-2011, 02:26 AM   #4 (permalink)
aero guerrilla
Piwoslaw's Avatar
Join Date: Oct 2008
Location: Warsaw, Poland
Posts: 3,672

Svietlana II - '13 Peugeot 308SW e-HDI 6sp
90 day: 58.1 mpg (US)
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My engine didn't have an EGR cooler, but about a year ago I installed one from a newer (EURO 4) version. It's hard to tell whether warm-up times shortened, since at the same time I had a block heater installed, plus I added an upper grille block and engine insulation for the winter.
I read that the EGR valve on my engine doesn't open until the coolant reaches a certain temperature, probably to reduce the risk of condensation. Newer, more emissions-centered, versions may start EGRing earlier.

As for milage, I didn't notice any immediate changes, maybe because right after installing the EGR cooler we had a long and cold winter. This year's milage has improved, but I like to blame that on fine-tuning the nut behind the wheel

I don't know if the cooler helped NOx, since my inspection garage doesn't do emissions
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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