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Intake Air Temp Test 1.

Intake Air Temp Test 1.

K&N Typhoon Tests

Test of Air Temperature at Point of Intake

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The sensor element was placed at the top-center of the filter, pressed between and held securely by the pleats. This is likely to be the warmest place in the air collection area.

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Stopped at idle for three minutes to allow the engine to finish warming up fully. Temperature climbs very quickly when stationary. A stop at a Taco Bell drive thru maxed out the thermometer at 160 degrees. Clearly it gets hot under the hood if you sit for any length of time.

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A couple of blocks down the road, driving down residential (25 mph) roads and slowing to the first light. About 3 minutes. Temp has dropped 35 degrees. This is typical. Up to 40 mph the hemi is barely above idle.

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Stopped at the second light. Speed on this road is 50 mph. temp still falling.

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Next light. Temp has fallen further.

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Next light. Temp is only 5 degrees above ambient.

I caught every light during this test so these are one-block intervals (Fresno has long city blocks and is laid out in a straight-up NEWS grid.

Ending in-city testing at this point. This is the point where the Taco Bell heatsoak, mentioned above, occurred.

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Five minutes after starting down the freeway. Temp is 1 degree above ambient. Ordinary behavior is fluctuations of 1 degree at or above outside temp at constant speed on flat ground.

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Hard acceleration only yields a small increase, which equalizes within one refresh to ambient.

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Two minutes later outside and engine are again equal.

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five minutes after that... same story.

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75 miles later its warmer outside. Terrain is no longer flat but uphill, with a hair of acceleration needed to maintain speed.Temp bobbles between this point or down one degree.

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Article by
Matt Robertson
Matt is the Managing Partner at Leland-West Insurance Brokers, Inc. He started with the firm while still a college student, way back in 1984. According to Matt his only remaining hobby is Motorsport ... because its all he can afford ("will work for tires"). Reach him at matt@lelandwest.com