Air Temp and volume
FLORIT said:
What I am REALLY trying to discover here is why my IAT readings are so high to begin with. That's why I have to do this from a COLD START. (Let the engine cool down completely and check the IAT when I first start it.) The readings better be much lower until the engine warms up, or I have a IAT sensor issue.
Okay, here goes. Just sat in the driveway, did hood open and hood closed long term with the Predator for measurement and Predator Tune in and here is what I found.
The STOCK fan temps are LO: On at 227*F, off again at 219*F
(per the Helms) HI: On at 235*F, off again at 227*F
Hood open and closed: Measurements not available
The PREDATOR fan temps LO: On at 190.4*F, off again at 183.2*F
HI : On at 199.3*F, off again at 190.3*F
The Predator caused the Lo fan speed to kick in precisely at planned temp, but the engine never cools below 183.2*F to turn off the fans at idle. This would occur in any event if driven faster than 30 MPH according to the Helms. I observed thermostat open occur at 180* +/- a degree or so.
Air (IAT) readings at idle, fully warmed and heat soaked for 60 total minutes at idle prior to measurements in full sunlight, ambient air temperature 74*F, minimal breeze.
Hood open, ECT stable at 192*F, fans on, IAT stabilized at 84*F...15 minutes idle observed, (30 minutes running before beginning observation to assure stabilization).
Hood closed, ECT stable at 194*F, fans on, IAT stabilized at 104*F...15 minutes idle observed after 30 minute stabilization period expired to assure heat soak before beginning observation.
These are hard numbers. I did not bother with the A/C on. I am also running the K&N filter on the Speed Induction kit, TB coolant heat stock. The tube gets uncomfortably hot right at the TB from the heat from the engine and hot air from the fans, but remains touchable. The rest of the tube stays cool. Hope this helps!