[quote=apk919;1068447]
Quote:
|
Yes, and I think some of that heat soaks the area around the throttle body, perhaps even the airbox (making it an interheater, I guess).
|
but the MAF is really really "far" away from the TB and the fact between it is the rubber inlet and abs plastic on the box that act like heat gaskets. just find it hard to believe air rushing downstream would still yield such high heat soak. Also when i was monitoring the IAT, the temps moved really quick up and down, quicker than I guess heatsoak can. The TC4_3 IC inlet temps behaved more like a heatsoaked location would.
Quote:
I would have thought that it would be useful to measure the temp of the charge after the IC too.  Maybe it has something to do with the evolution of the ECU; the N/A version of the car only needs the temp and flow from the TMAF at the airbox.
|
but that's cos that's the intake charge temp that goes direct to the intake manifold... as opposed to SC. I mean on an NA, there'd be no other place to put it.
if you are indeed correct about this, i dont mind tapping the other stock tube and getting data there. I have an extra yellow sensor probe as well as thermo wire twist probe.
Quote:
The yellow temp is cooling air from the roof duct after it's passed through the IC. The sensor I used to measure cooling air flow through the IC has a thermocouple and pressure sensor too, so I was able to take all that data at the same time.
Quote:
|
Just to add a little support to this... here's the graph of downstream cooling air vs. speed that I logged... note that there are 10-15 degreeF (6-8 degreeC) increases in the cooling air during high load periods... I'd expect to see some of that in the IAT if it was post IC..
|
.
|
OIC what you mean, right increeses in speed followed by heat transfered air... that makes sense. But this does coincide with the IAT data under the theory that it is post SC. JUst might not be able to see this in the graph made off the innovate data because 1) changes are almost instant. check the graph using the software, follow the time line towards the end where the cars running a bit harder, and watch the IAT and Load, there's definite correlation. 2) Keep in mind i was cruising to work for this session and not driving as one would in a spirited fashion. the session where I took 2 hard consequetive pulls was accidentally deleted, but reflected the correlation better because the fluctuation in IAT was much more volatile. There's a typhoon warning for tomorrow so might not get a chance to log some hard pulls but will do so and email to you asap.
Quote:
|
Yes, at idle the SC is bypassed, so the air coming in from the airbox is not compressed, and should be roughly the same temp post IC.
|
right which also why it would rise inline with throttle when compressed...
you might be right, but hope not...