Quote:
Originally Posted by grober
Does this not mean your underbonnet air temperature will rise---not the engine you understand since its got a direct coupled means of cooling via the "part rad"--- but the air space and with it all those sensitive little sensors/ECU'S which don't like it hot???
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Why an automatic device would be good (just been doing some googling and honda have them and they close at high speeds). In fact it would be interesting to log the underbonnet temp. I suspect at motorway speeds it's lower than when crawling around town, if this is true you can afford to close off a lot of the grill at speed (which is when you get the drag benefits).