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If you haven't checked your airbox thermostat lately...... some data for you. 900 1995

One other thing I forgot to mention in my previous post.

The diameter of the hot air supply side is noticeably smaller than the cold air supply side. I would estimate that the area of the diameter is about 1/2 that of the cold air side.

It amazes me that these engines could even run at high rpm with that air flow restriction in place and the 160+F intake air temps going into the engine. Simply amazing.

We have to travel over two long (about 6 miles), and high (over 10,000 feet in elevation) mountain passes fairly often. That means high rpm & high load for several minutes at a time when the air is getting noticeably thinner the higher we go. I'm surprized we ever made it to the top.

DEWFPO
--
1998 S90 068,300 and 1995 964 152,300






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