I doubt I'll be doing that. Nice cool climate, here, and the only time I seem to get much heat soak is in heavy traffic.
The standard setup does look as though an extractor fan might be of use in some circumstances (like low airflow circumstances) as there doesn't seem to be a clear path for warm air that's rammed in to exit cleanly...it just goes up through the intercooler and exits into the engine bay, where I guess it then competes with airflow from the radiator to exit the engine bay downward and out.
Not a big deal though. I'm not a racer and the performance as it is, is simply sparkling. Quite happy. I'm just curious to make any efficiency gains that are there for the taking, cheaply. I saw a thread about one user who had created a vent in the front mudguard to try and achieve improved airflow...it hardly made any difference, but hat's off to the attempt!
We've just had a rather destructive earthquake in Christchurch, for anyone interested. Real bad news; much destruction, and it looks like this time there will be a number of deaths. Maybe a lot. Not a good day in NZ.
2007 VW Polo GTi, white, standard. First registered in Japan, imported to NZ 2010. Owned since Dec/10. Love at first drive.
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