I have both pre and post turbo gauges rigged up on my truck right now, so I thought I'd do a couple hill runs for my own comparison and I set up the GoPro so I could show others as well
It's noted in the video as well, but the analog gauge is pre-turbo in Celsius and the digital reading on the 3in1 is post-turbo and Fahrenheit, so it's not a straight comparison, but it's what I had to work with. Just a little math required.
Note, not only the temperature difference pre to post turbo, but also the reaction time difference between the two. Post turbo probe is located 3" from the joint off the factory elbow.
Bit of a summary of my truck:
1994 HDJ81
Intercooled
MMP turbo presently fitted
Tuned
285/75/16 Duratrac tires at the time of the video.
It's noted in the video as well, but the analog gauge is pre-turbo in Celsius and the digital reading on the 3in1 is post-turbo and Fahrenheit, so it's not a straight comparison, but it's what I had to work with. Just a little math required.
Note, not only the temperature difference pre to post turbo, but also the reaction time difference between the two. Post turbo probe is located 3" from the joint off the factory elbow.
Bit of a summary of my truck:
1994 HDJ81
Intercooled
MMP turbo presently fitted
Tuned
285/75/16 Duratrac tires at the time of the video.