LT1 air temp locations on a stocker.

Kdw1403 · 09-24-2019, 05:26 PM

Fast XFI 2.0. 98 camaro. My air temp sensor is located right at the throttle body entrance. Was told it needed to be inside the intake. Any lt1 racers run their sensor inside the intake? If so where and how did you mount it? Does ice/chilling make you change your tune up?

cmracing · 09-25-2019, 07:32 PM

Look in your software and see it the sensor is even being used to modify Fuel or Timing. Most people simply log the output of that sensor and don't use it for any other reason.

If it is being used, then you need to see what it is modifying to see if it can change fuel/timing during a pass should you decide to ice down the intake.

If you do ice down the intake and that sensor is mounted out in front of the TB which is typical, then that sensor will not see the cool manifold. IF you are setup to run closed loop then it won't matter. If it isn't, then you could be leaving some power on the table, most likely could have added more fuel to go along with the cooled intake.

I use them to see the air temp drop during a pass, it does nothing to the tune on either of my cars. I do run closed loop with a 2% limit. Not sure if I could get to the upper limit if I iced the manifold, never tried.

Ed Wright · 09-28-2019, 08:12 PM

Quote:

Originally Posted by Kdw1403

Fast XFI 2.0. 98 camaro. My air temp sensor is located right at the throttle body entrance. Was told it needed to be inside the intake. Any lt1 racers run their sensor inside the intake? If so where and how did you mount it? Does ice/chilling make you change your tune up?

I have a Hogan sheet metal intake. Has threaded bungs welded in the plenum. FAST XFI calibrations I started with had the IAT correction tables were all zeros. I had to develop the correction tables myself. That did make a small difference in fairly extreme temps.
Mine is a Super Stocker. I started with a cast LT4 intake. I drilled @ tapped a hole for the IAT sensor for a ‘90 TPI engine. Those were threaded. The LT1 is not threaded. I drilled the back of the plenum, same place I have it in my Hogan.

09-24-2019, 05:26 PM	#1
Kdw1403 Member Join Date: Nov 2016 Posts: 205 Likes: 48 Liked 68 Times in 22 Posts	LT1 air temp locations on a stocker. Fast XFI 2.0. 98 camaro. My air temp sensor is located right at the throttle body entrance. Was told it needed to be inside the intake. Any lt1 racers run their sensor inside the intake? If so where and how did you mount it? Does ice/chilling make you change your tune up?

09-25-2019, 07:32 PM	#2
cmracing Member Join Date: Aug 2016 Posts: 173 Likes: 113 Liked 62 Times in 29 Posts	Re: LT1 air temp locations on a stocker. Look in your software and see it the sensor is even being used to modify Fuel or Timing. Most people simply log the output of that sensor and don't use it for any other reason. If it is being used, then you need to see what it is modifying to see if it can change fuel/timing during a pass should you decide to ice down the intake. If you do ice down the intake and that sensor is mounted out in front of the TB which is typical, then that sensor will not see the cool manifold. IF you are setup to run closed loop then it won't matter. If it isn't, then you could be leaving some power on the table, most likely could have added more fuel to go along with the cooled intake. I use them to see the air temp drop during a pass, it does nothing to the tune on either of my cars. I do run closed loop with a 2% limit. Not sure if I could get to the upper limit if I iced the manifold, never tried.