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Ok farenheit, that's a bit different. And from your test, 100kph, it reduced temps. Fair enough, to be expected at those speeds. But what are the performace implications of this? You're going to need more than just a temperture gauge to work out what the lower temps may do (if anything) for the car. That said, I would very keen to see if there are any benefits, might justify my putting them on my car a bit more...
well farenheit is a massive difference.
i dont really care if the engine runs "cooler" - im more interested on if their are gains to be had. and i honestly think its about the same as the two hole mod.