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Intake Temperature Logging, Morning Runs


Background data:
Morning runs started at 5AM with a total trip time approximating 30 minutes. Ambient temperatures were around 48 degrees Fahrenheit for the modified run and around 52 degrees for the stock run. The same route was taken and I attempted to take data points at the same or similar places during the run, but was not perfect. Give me a break, 5AM is freaking early!
Readings were taken at notable points during travel, always after a certain state had been maintained for at least one minute. Example: A reading may have been taken after sustaining 50 MPH for one minute or at a stop light after sitting at least one minute. If an activity took more than a few minutes, such as sustained highway speeds, multiple plots may exist to span that action.
The first plot was taken immediately after startup. The next 5 plots are city street travel with little to no traffic and minimal stop lights. The remaining plots (starting with plot 7) are highway travel with exception of the last three which are getting off the highway and pulling into the parking lot.



Interpretation:
It's easy to see that differences in the intake temperatures are neglegible. Due to the nature of travel (few stops, little traffic) and the fact that the engine bay starts out stone cold in the morning, there is little opportunity for either the stock nor the modified intake to absorb enough heat to effect intake temperatures in the 30 minutes of time it takes me to get to work. The only possible benefit the modified intake may have had during this run is the increased breathing capacity due to removing the stock snorkle restriction.
However, note the sudden spike at the end of the graph for the stock intake. This spike corresponds to the end of highway travel and the 100 yards or so it takes me to get into the parking lot at work. This implies that the intake *did* indeed absorb some heat during the trip, but just not enough to effect the car at highway speeds. Clearly highway travel provided enough engine bay air flow to keep intake temperatures down, but once I stopped the under-hood temperatures got the upper hand on the stock intake again. I suspect that if I had the time to do some city driving at that point we'd see an increase in the stock intake temperature.


Copyleft Mark Leinhos
Last modified 08/04/15

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