Re: Fuel injection? Open or Closed loop?
 

Which sensor?

Re: Fuel injection? Open or Closed loop?
 

Kyle, he has to be talking about the IAT sensor.

Usually mounted in the air filter box or ducting. Can also be screwed into the intake manifold and set up as a MAT sensor. Lots of race cars running around without one, the diagnostic code shut off, and the correction table zeroed out. In Speed Density mode, most recommend a MAT sensor being used.

Re: Fuel injection? Open or Closed loop?
 

Gotcha. I wasn't sure if he was referring to the MAP sensor which is in the proper position for Speed Density, but flipped up and the hole plugged for Alpha N.

Re: Fuel injection? Open or Closed loop?
 

Intake air temp sensor. For me, its a factory unit screwed into the lower intake. Just noticed alot of others let it flap in the breeze near the entrance to the TB. Just wondered if it helps something in the fuel curve control.

Re: Fuel injection? Open or Closed loop?
 

Yes, it can help. If you see it out in the open air, like in front of the throttle body, then they are generally running it in Alpha N. Ed's post covered it pretty well.

Edited to add: I do use the air temp to affect my fuel curve to a small degree.

Re: Fuel injection? Open or Closed loop?
 

I have mine screwed into the air box near the scoop. Works fine.

Re: Fuel injection? Open or Closed loop?
 

Art,

What I am wondering is if I plug the hole in the intake, and just leave it out in the open air, if it would change anything. Its not a problem or anything, but just a thing that makes ya go hmmmmmmmmm

Tony

Re: Fuel injection? Open or Closed loop?
 

I wouldn't bother moving it.

Re: Fuel injection? Open or Closed loop?
 

Mine is in the open air of the box I built around my throttle bodies. This picture was taken before I finished it The sensor is in the sheet metal.
http://i203.photobucket.com/albums/a...1092/002-1.jpg

Re: Fuel injection? Open or Closed loop?
 

If you are concerned that the ambient temps are causing the ECM to pull timing, just adjust / eliminate the amount of timing being pulled via the AIT mapping.