sensors are thermistors, and have a resistance change of roughly 70 Ohms/degree change (ie, for every degree increase in temperature, the resistance drops 70 Ohms). I can't remember the gauge of the IAT
wires, but 18 gaguge wire has a resistance of roughly 0.0069 Ohms/foot.
So, you'll need 10 thousand feet of 18 gauge wire to skew the IAT
sensor by one degree F. Obviously that's not a problem.
As for the placement of the IAT
itself; I don't think it makes much of a difference either way if the IAT
is on the filter box or in the air intake tube. The SHO IAT
is in the same location as the Duratec (I think they use the same box). The reason might
be that the SHO TB
is heated with coolant, and the radiant heat from the TB
might skew the IAT
readings. I'm sure Paul has actually tested placing the IAT
in various locations (I know he has placed thermocouples all around the engine to measure underhood temps before) and has used that to determine that by the TB
is the best place, so I would defer to his recommendation on that.
, the Gen 4 composite UIM
is the closest match for the Gen 3 Vulcans. The EGR
tube can be customized with two EGR
tubes and some TIG welding (I think Hamal was going to try to braze them together). I have used a 3/8" brass compression coupling before to hold two EGR
tube halves together in a pinch - not the prettiest, but it works.