Quote:
Originally Posted by mrmike
I also remember reading that the pcm requires a 180^ thermostat. If your leak is in the lower intake manifold, you can get the new thermostat put it while they have it all apart.
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its not required, but your fans will work overtime till you get the 180, and yes premium is highly recommended, under normal driving you won't notice much but under WOT load you will get preignition, until the pcm pulls the timing back do to KR=knock retard, when that happens you lose power.