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INPA or sometimes BAVtech connected to a laptop.
With Bavtech I tend to log alot of information whilst driving and go back and anaylse it. Sad I know but there is a reason for it!
Dinan CAI and Intake temp
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With Bavtech I tend to log alot of information whilst driving and go back and anaylse it. Sad I know but there is a reason for it!
Im not so sure I agree with you guys on that. The purpose of relocating this sensor is because the system r3tard$ itself to those higher readings. By placing it in the location that UFmotorsport discovered the sensor will send the true outside air temp to the engines DME.
PS. Dinan later adapted the idea from UF and their kit.
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The intake air temperature probe needs to measure the temperature of the air coming into the intake and NOT the outside air temperature.
This completely defeats the point and if you put it outside your actual intake temp will soar above the outside temp.
The readings from this temperature probe are used by the ECU for air intake temperature compensation and manufacturers do this for a reason!
You want to be ******ing the ignition and adding fuel when intake temps are very high so to protect the engine.
You don't want to lie to the ECU and tell it the wrong reading. Why compromise on safety for power in traffic?
Just leave the intake probe in the inlet tract. The datalog the results comparing intake temps with actual ambient temps and you'll see with a good intake temp they will be very close together.
Hope that makes sense and the importance of measuring the actual intake temperature has been briefly covered?
This completely defeats the point and if you put it outside your actual intake temp will soar above the outside temp.
The readings from this temperature probe are used by the ECU for air intake temperature compensation and manufacturers do this for a reason!
You want to be ******ing the ignition and adding fuel when intake temps are very high so to protect the engine.
You don't want to lie to the ECU and tell it the wrong reading. Why compromise on safety for power in traffic?
Just leave the intake probe in the inlet tract. The datalog the results comparing intake temps with actual ambient temps and you'll see with a good intake temp they will be very close together.
Hope that makes sense and the importance of measuring the actual intake temperature has been briefly covered?
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That's what we do and that's what we recommend.
Hot on the outside. Not so much on the inside. CF is a crap conductor of heat.
The OEM location is also right after the air filter. It would make sense to mount the sensor in a similar location on aftermarket intakes.
Anyone know why this part is not listed for the M5? PN 13621739510
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Because it's the thermisitor on the passenger side MAF sensor, not a separate sensor. Thats why we do relocation kits.
What is the p/n of a sensor that has compatible calibration with our ecu?
13621725323 ?
Think so...
Nobody should be allowed to opine about IATS without reading this thread AND the links in his first post....
http://www.m5board.com/vbulletin/e3...-cold-air-intakes-temp-sensor-relocation.html
A
http://www.m5board.com/vbulletin/e3...-cold-air-intakes-temp-sensor-relocation.html
A
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Thanks for posting that thread.
Unfortunately without understanding how the ECU works not alot can be discussed.
I may add to that discussion at some point but I will tell you now that I have data logged inlet air temperatures with the stock intake system with a remote sensor recording temperatures at different places along the intake tract both before and after the MAF.
The temperature even within the plenum itself is lower than at the maf and before the MAF. It's just a simple case of the sensor within the MAF heatsoaking and due to the type of material it's made from the temperature doesn't come back down to realisitic levels until a very long time.
The main thing is that with a CAI kit, you need to measuring the air being drawn into the engine via the inlet tract.
Unfortunately without understanding how the ECU works not alot can be discussed.
I may add to that discussion at some point but I will tell you now that I have data logged inlet air temperatures with the stock intake system with a remote sensor recording temperatures at different places along the intake tract both before and after the MAF.
The temperature even within the plenum itself is lower than at the maf and before the MAF. It's just a simple case of the sensor within the MAF heatsoaking and due to the type of material it's made from the temperature doesn't come back down to realisitic levels until a very long time.
The main thing is that with a CAI kit, you need to measuring the air being drawn into the engine via the inlet tract.
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stock intakes with k&n drop in's here. i have the iats mounted in the pass side snorkel(#13 in diagram on previous page) behind the bumper. best spot i could think of to get an accurate reading. iirc the sensor data collected by the dme isn't used on the fly(instantly). i think theres a built in "lag" time for this specific reason. i may be wrong but i swore i read this somewhere.
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Good place to put it. We normally put them in the airbox and get no heatsoak issues.
I think you mean refresh rate of the sensor?
That can change with the type of software your using and if your hard drive is busy with other operations which may lead you to think it's slow.
I really should make a video!
That's where mine is- exterior of the sensor is towards the front of the car away from heat sources. I am sure that sitting in very hot conditions, 110F, stopped in traffic, I am getting some heatsoak. Physics being physics and all... BUT I decided that having accurate air temps trumps the slight benefit of sensing cooler air further out the intake track. (And risking the engine actually seeing hotter air than is being sensed at the bumper.)
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Wise man you are indeed ard.
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