Air temp sensor
I have a 98 sti type r fitted with a power fc and was wondering wether the power fc uses the information from the sensor or is it just for reference?
Reason I ask is I'm running a fmic and induction kit and the sensor is just lying in the engine bay and have noticed on the commander quite high temps now. If the power fc doesn't use it for calculating fueling etc can it be used for measuring intake temps at the throttle body? Cheers James |
Anyone? :)
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:)
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I wish someone would answer this as I'm interested too.
I monitor the air temp with a Commander too but it's in the stock position. I think monitoring intake temps at the throttle body using the oe sensor wouldn't be easy as the sensor's quite big. |
There's a 2d table available on the PowerFC when using the Datalogit box for Intake Air Temp vs Ignition Retard. Can be used to subtract timing for hot intake air temp.
This table can't be seen or modified on the commander. |
Is the existing intake temp sensor located in the maf? As the sensor I'm thinking of using used to be fitted on the ducting that went to the snorkel then the old air filter housing. I thought this may have been an ambient temp sensor?
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Originally Posted by Rescue Dude
(Post 10733207)
I wish someone would answer this as I'm interested too.
I monitor the air temp with a Commander too but it's in the stock position. I think monitoring intake temps at the throttle body using the oe sensor wouldn't be easy as the sensor's quite big. |
Originally Posted by JdcTypeR
(Post 10733414)
Is the existing intake temp sensor located in the maf? As the sensor I'm thinking of using used to be fitted on the ducting that went to the snorkel then the old air filter housing. I thought this may have been an ambient temp sensor?
The problem you'd have fitting it into the silicone hose would be sealing it adequately. Also is there enough cable to get it where you want it to be? |
I'd extend the wiring for it. So I really need to know wether the power fc uses it to calculate or wether its just for reference on the commander screen as if it's used for adjusting fueling etc it's not good that it just sitting in the engine bay and not in the intake air flow
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Originally Posted by little'un
(Post 10733249)
There's a 2d table available on the PowerFC when using the Datalogit box for Intake Air Temp vs Ignition Retard. Can be used to subtract timing for hot intake air temp.
This table can't be seen or modified on the commander. |
No, the ignition vs temp correction is always used by the ecu, if setup. - it just can't be accessed or modified via the hand controller
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So is it ok to move that sensor to just before the throttle body then?
Cheers James |
Originally Posted by JdcTypeR
(Post 10734602)
So is it ok to move that sensor to just before the throttle body then?
Cheers James I'd call Mark at Thwaites Developments and ask if the sensor is used by the ecu to alter any settings. If you do get an answer I'd be interested in finding out. |
The stock plastic air temp sensor is not ideal to use for charge temp measurement or ignition correction.
It will be difficult to mount and seal in a boost pipe, and has a slow response to temp changes. It's scaling is not configurable on the ecu, so can't simply be substituted with a faster acting sensor either |
So will it be ok to mount into the rubber pipe after the maf as it was originally pre turbo as standard?
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