Stainless steel lid? Bad idea?
10-10-2013, 07:19 AM
#21
The brilliant folks at EFI Connection offer the needed five pin MAF pigtail, the 85mm MAF with integrated IAT sensor and they show the pinout for the swap here:
http://www.eficonnection.com/eficonn...spx?ItemId=537
http://www.eficonnection.com/eficonn...spx?ItemId=537
10-11-2013, 11:59 AM
#22
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The in-MAF IAT is better than an in-lid IAT mounted in
a place that doesn't see the full air stream. Been there.
But any IAT in the engine bay will assume the engine
bay temperature when sitting or idling, the wall conduction
of heat to thermistor dominates the zero or minuscule
airflow cooling. This gives you starting troubles and
timing pull off the line if you've staged for a while with
the hood closed.
The errors from a remote mounted, ambient air exposed
IAT are more livable / benign than one that's telling you
more about the engine bay temp than the incoming air
temp, if these are not the same - and you very much
want them not to be. Mouth of a cold air tract is not a
bad location. But if the cold air lineup is reliably drawing
air at ambient temp, then any ambient-temp location
would do as well. Gets tricker when your inlet is, say,
a couple of inches from the radiator & condenser and
up in the pocket, where those can throw their heat back
at it (esp. with fans off and sitting). You have to look at
how you're set up and how hot it gets, and whether
that's the best place to get an outside air reading.
a place that doesn't see the full air stream. Been there.
But any IAT in the engine bay will assume the engine
bay temperature when sitting or idling, the wall conduction
of heat to thermistor dominates the zero or minuscule
airflow cooling. This gives you starting troubles and
timing pull off the line if you've staged for a while with
the hood closed.
The errors from a remote mounted, ambient air exposed
IAT are more livable / benign than one that's telling you
more about the engine bay temp than the incoming air
temp, if these are not the same - and you very much
want them not to be. Mouth of a cold air tract is not a
bad location. But if the cold air lineup is reliably drawing
air at ambient temp, then any ambient-temp location
would do as well. Gets tricker when your inlet is, say,
a couple of inches from the radiator & condenser and
up in the pocket, where those can throw their heat back
at it (esp. with fans off and sitting). You have to look at
how you're set up and how hot it gets, and whether
that's the best place to get an outside air reading.
