Prosport gauge readings different than oem CLT in tunerstudio
#1
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So I'm here trying to ask the same question again. Any help would be great.
Earlier I sent my Prosport gauge because it was reading 15 degrees high. Prosport themselves claimed that their sensors was working fine but sent me a new set. However I tested the new set and it was reading a different resistance value (68F at 1220 ohms). Installed it back in the car but it still isn't matching my tunerstudio values. The Prosport gauge is mounted in the upper hose.
CLT values:
14F 9250
71.6F 2320
176F 330
biased resistor 2490
Using GM iat sensor
-40F 100700
86F 2238
210.2F 177
biased resistor 2490
This stuff is pulling my hair and the noobness of me can't figure out why. I'm running Bp6d vvt swap into 95 miata with I/H/E and flywheel. I got a friend to do the project but ended left me hanging.
Earlier I sent my Prosport gauge because it was reading 15 degrees high. Prosport themselves claimed that their sensors was working fine but sent me a new set. However I tested the new set and it was reading a different resistance value (68F at 1220 ohms). Installed it back in the car but it still isn't matching my tunerstudio values. The Prosport gauge is mounted in the upper hose.
CLT values:
14F 9250
71.6F 2320
176F 330
biased resistor 2490
Using GM iat sensor
-40F 100700
86F 2238
210.2F 177
biased resistor 2490
This stuff is pulling my hair and the noobness of me can't figure out why. I'm running Bp6d vvt swap into 95 miata with I/H/E and flywheel. I got a friend to do the project but ended left me hanging.
Last edited by rikaro; 04-05-2015 at 12:16 AM.
#3
Former Vendor
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Put it in a pot of water along with a known good temperature gauge (digital meat thermometer or similar). Take three readings on the way to boiling, then do your OEM sensor too. Use the data to figure out who's right and who's wrong.
(Here's a hint: The Prosport gauge is wrong)
(Here's a hint: The Prosport gauge is wrong)
#6
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Don't waste your time with those gauges, AccuTech gauges are relatively cheap and are extremely accurate in my experience. These are available from a number of vendors on here.
AccuTech? Stepper Motor Gauges
AccuTech? Stepper Motor Gauges
#8
Boost Pope
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There are several different standards for the calibration of value to voltage in automotive-style temperature and pressure sensors, so it's not reasonable to expect sensors from two different manufacturers to yield the same resistance value at the same temperature. This is why Megasquirt has the sensor calibration function in the first place.
#9
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Update. I a hoping someone can solve this with me.
I tested the prosport again the other day and wired the to power straight to the battery and my gauges are a lot more accurate than previously wired to the radio.
Do any of you guys have this issue? Could it be that my ground or wiring not getting the amperage delivered to these gauages?
I tested the prosport again the other day and wired the to power straight to the battery and my gauges are a lot more accurate than previously wired to the radio.
Do any of you guys have this issue? Could it be that my ground or wiring not getting the amperage delivered to these gauages?
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