Intake Temp's
01-11-2010, 10:57 PM
#1
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Join Date: Mar 2003
Location: Atlanta, GA / Lake Keowee, SC
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Intake Temp's
As with most of the east coast and midwest, its been super cold in Georgia the past week or so. The days have been crystal clear and the roads are mostly clear except an occasional icy spot in shaded areas. That being the case, I took the car out early Saturday morning to my son's lacrosse practice. Exterior temp said 10 degrees, and being from Michigan I think its fairly accurate. So my question to the forum, how much of a difference do you think a cold intake temp like this has versus say an 80 degree summer day? It seemed to me like it had a major effect. This was the first real cold day its been out since I went to EFI etc.. I am sure its a combo of cold tires (I run Cup Sports) and cold roads as well as a little more power producing all that wheen spin! The car seemed screaming fast.
01-12-2010, 08:23 AM
#3
Nordschleife Master
Hopefully you have a correct air intake temp compensation table programmed into your ECU otherwise you'll be running lean. The difference between 10F and 80F results in an additional 14.4% fuel required due to the increased density of the air.
Does it matter? Yes it does, in many ways.
The wheel spin occurs more from cold hard summer performance tires than the additional power the engine is producing.
Does it matter? Yes it does, in many ways.
The wheel spin occurs more from cold hard summer performance tires than the additional power the engine is producing.
06-08-2023, 11:09 AM
#5
I have one of these , not a permanent solution but - I use for tuning and when making any other changes.
I researched and found longer thermal couple leads
2 channels
I researched and found longer thermal couple leads
2 channels
06-08-2023, 01:50 PM
#6
You could at least do it in a roundabout way if you had the temperature/voltage characteristic curve of the sensor, but at best you will get that data if you know a Bosch Service with access to the ESI tronic system.
In any case, the sensor it is a PTC whose resistance increases with rising temperatures and which then delivers decreasing voltage values.
Fritz