Pyrometer with Superchips Microtuner
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New User
Joined: Nov 2004
Posts: 14
Likes: 0
From: Clearwater, Fl
pre and post pyrometer is it worth it??
RJB1
Sounds like we are at the same point, as you probably read I have been asking the same questions. I have had my SC for several months. I keep it on HP when not towing and close to home.
When I hit the highway towing 4-6k of weight I put in economy tow. What I am wondering is if I put it in tow, which is suppose to be over 6 or 8k, if it will be alot different then econo tow.
I have decided, because of a close vendor, to go with the Autometer C2 pyrometer, and boost. I wanted oil temp but they dont make one, the closes I can find is trans temp, they say I can use it for oil but it says TRANS on it so I didn't want to cheapin it. I'm thinking of doing a PRE and POST pyrometer gauge not sure if the cost of $$150 per unit is really worth it.
Has anyone done this, was it worth the extra $$$$$. does it make sense to do this, will there be a temp diff and does it make operational sense.
also I an thinking of doinig the woodgrain pillar posts they look nice on line but not 100 percent yet. The passengerside come hole but allows you room to cut holes to use your handles.
Sounds like we are at the same point, as you probably read I have been asking the same questions. I have had my SC for several months. I keep it on HP when not towing and close to home.
When I hit the highway towing 4-6k of weight I put in economy tow. What I am wondering is if I put it in tow, which is suppose to be over 6 or 8k, if it will be alot different then econo tow.
I have decided, because of a close vendor, to go with the Autometer C2 pyrometer, and boost. I wanted oil temp but they dont make one, the closes I can find is trans temp, they say I can use it for oil but it says TRANS on it so I didn't want to cheapin it. I'm thinking of doing a PRE and POST pyrometer gauge not sure if the cost of $$150 per unit is really worth it.
Has anyone done this, was it worth the extra $$$$$. does it make sense to do this, will there be a temp diff and does it make operational sense.
also I an thinking of doinig the woodgrain pillar posts they look nice on line but not 100 percent yet. The passengerside come hole but allows you room to cut holes to use your handles.
Cargo Master
Joined: Jun 2003
Posts: 2,203
Likes: 0
From: Carlsbad, California
There have been a couple guys who've posted here who have both pre and post turbo pyrometer probe installations.
I personally didn't feel that it was worth the extra money to add the second probe post turbo. I figured that the pre turbo probe tells me everything I need to know and that is that I'm not exceeding my personal limit of 1200 deg or so into the input of the turbo.
The output temp is going to be something less than that by some variable amount that depends on a couple things. How close to the outlet of the turbo the post turbo pyro probe is placed, and on the operating condition of the motor at that time.
The post turbo temps are slower to respond than pre turbo, i.e., it takes a bit of time for the heat to transfer through the turbo. Also, some heat is lost through the turbo as it compresses the air for the motor.
If there isn't a lot of boost going on the turbo isn't doing as much work and there's less heat lost through the turbo and the inlet and outlet temps will be closer in line.
The general observations that have been posted is that the outlet temp will be 200 to 300 degrees less than the inlet temp under load. But differences as high as 500 deg have been reported.
So other than just because I'm curious, I couldn't convince myself that I needed another gauge.
The X-Monitor only works with one pyro probe so I would have had to add a second analog gauge or design some kind of probe switch.
I have towed 10,000 lb with my SCMT in the economy mode rather than tow safe and watched the EGTs while pulling some 8% grades. In my case I didn't see any temps that were too high, but unless I was running a gauge package with the probe pre turbo I would stick with the tow safe tune and follow the SC guidelines.
For some pretty good reading on the topic, do a search on pyro probe, and there was one from some time back when I was first looking into the topic with weld or tap in the thread title.
I personally didn't feel that it was worth the extra money to add the second probe post turbo. I figured that the pre turbo probe tells me everything I need to know and that is that I'm not exceeding my personal limit of 1200 deg or so into the input of the turbo.
The output temp is going to be something less than that by some variable amount that depends on a couple things. How close to the outlet of the turbo the post turbo pyro probe is placed, and on the operating condition of the motor at that time.
The post turbo temps are slower to respond than pre turbo, i.e., it takes a bit of time for the heat to transfer through the turbo. Also, some heat is lost through the turbo as it compresses the air for the motor.
If there isn't a lot of boost going on the turbo isn't doing as much work and there's less heat lost through the turbo and the inlet and outlet temps will be closer in line.
The general observations that have been posted is that the outlet temp will be 200 to 300 degrees less than the inlet temp under load. But differences as high as 500 deg have been reported.
So other than just because I'm curious, I couldn't convince myself that I needed another gauge.
The X-Monitor only works with one pyro probe so I would have had to add a second analog gauge or design some kind of probe switch.
I have towed 10,000 lb with my SCMT in the economy mode rather than tow safe and watched the EGTs while pulling some 8% grades. In my case I didn't see any temps that were too high, but unless I was running a gauge package with the probe pre turbo I would stick with the tow safe tune and follow the SC guidelines.
For some pretty good reading on the topic, do a search on pyro probe, and there was one from some time back when I was first looking into the topic with weld or tap in the thread title.
