Originally Posted by
dojj
so where should this temprature measurement be taken from then?
Its supposed to be a measure of the temperature of air going into the air filter.
Where you choose to get a reading from to represent that is a matter of some debate, but not a lot, essentially it needs to be somewhere between the air filter and the dyno wall, where you think it best respresents the actual temperature of air that will go into the air filter, often putting it to close will result in it picking up radiant energy from hot engine components that will make the sensor hot but wont heat up the air going in to the same extent.
Im with Gary in that two far away is better than too close if you have to be either.
Originally Posted by
dojj
one side of me thinks that putting it as close to the actual inlet manifold as possible because then you have the actual temprature of the air that is being used by the engine, after it's gone through whatever induction pipework form the air filter, as possible to see what sort of fueling you would need
the other side of me thinks that it should be placed at the air filter side so that you know the temp of the air coming in, and that the sensor may misread due to it being cooled/heated by the air rushing past in the inlet manifold and generally being hotter than it should due to the heat coming from the engine
is there a difiniative right or wrong answer to this or does it depend on the operator in question?
On a turbo car, putting it AFTER the turbo is always going to make it think the air coming into the air filter was hotter than it really was as the turbo compresses the air, which heats it up! (pv=nrt)