Originally Posted by scott@upsolute
Was the sensor isolated from the duct work? (to rule out conduction of the hot pipes to the sensor?)
I'm surprised the air at the LH/RH intakes was any different than ambient, esp, if the probes were outside of the engine bay...must have some conduction ie you measured the pipe temp not the air inside (or some of each).
I'd guess that the IAT sensor (air temp in the inlet manifold) should be within 20 degrees F of ambient. This sensor should be insulated from the manifold by design.
Hi Scott,
The sensors were supposed to be isolated but the whole test was a disaster really with everything getting soaked and sensors moving etc. I think you are probably right about the conduction issues - its darn annoying since I measure temperature for a living. It was all in a bit of a rush while I had all the kit to hand.
I checked the OBD IAT trace and that was cooler but still followed the trend of the loggers. I am going to wire everything in semi-permanently and have another go when I get time.
Simon.