Inlet Air temp 10 deg higher than actual - Miata Turbo Forum - Boost cars, acquire cats.

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Old 09-04-2013, 05:49 PM   #1
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Default Inlet Air temp 10 deg higher than actual

My newly acquired and fitted Enhanced MS2 from rev came with a IAT sensor which i have duly fitted and wired in.

After resolving grounding issues I notice it is consistantly 10 deg higher than the actual air temp.

I presume the engine and under hood temp should stabilise to match the current air temp after being unused for 18+ hours...?

That being the case is there a way to calibrate the MS2 or adjust the reading to compensate..?

Does it even matter....?
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Old 09-06-2013, 01:28 AM   #2
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anyone?

MS2 users, does your Inlet Air Temp reading match current air temp or did you have to change a setting/calibrate to get it accurate?
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Old 09-06-2013, 01:31 AM   #3
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gm ait? did you calibrate thermistor table? is it set up correctly? or did you just connect it and expect the two to play together flawlessly? lol
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Old 09-06-2013, 02:04 AM   #4
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Originally Posted by 18psi View Post
gm ait? did you calibrate thermistor table? is it set up correctly? or did you just connect it and expect the two to play together flawlessly? lol
this.

BUT in my defence, there is no information saying otherwise....

I have seen and read various posts asking for thermister calibration reference but had no idea why AND having got the ECU AND IAT sensor from Rev presumed it was already setup for it. (no ill comment towards Rev, I just don't know either way...)

I figure being accurately 10 deg (Celsius) out across the range means something aint right.

Also, only 4 days after fitting the MS2 I appreciate having a race meeting in 2 days time is probably not the wisest move but things seem more or less under control..... .....tales of glory or woe to follow

Also just found out 21 cars are entered, so just a little nervous of that too. If i can figure out the boost controller I am hoping for a top 5 but on 7psi might be lucky....and will have to rely heavily on Emilios suggested 15x9's or rain for the win!!
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Old 09-06-2013, 02:06 AM   #5
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well calibrate it and make sure its set up properly.


..but even if its not you can still easily run the car and just adjust your mat enrichment curves to work around the 10* difference
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Old 09-06-2013, 01:43 PM   #6
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Quote:
Originally Posted by 18psi View Post


..but even if its not you can still easily run the car and just adjust your mat enrichment curves to work around the 10* difference
this assumes that his current thermistor is setup in a linear fashion... otherwise it could be off by something larger than 10 degrees at a different actual temperature.
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