IAT placement in a pull through system
06-04-2011, 01:40 PM
#26
what?
the resistance table I have is showing that it is very, very close?
I only went to 176F on the triumph.
Tested @68 *F (20c) = 2.27 Ohms
@176*F (80c) 0.29 - 0.35 Ohms
ours...Air temperature 68F--2.21--2.69
@140F..0.493--0 .667
maybe there are different triumph model iat"s?
the resistance table I have is showing that it is very, very close?
I only went to 176F on the triumph.
Tested @68 *F (20c) = 2.27 Ohms
@176*F (80c) 0.29 - 0.35 Ohms
ours...Air temperature 68F--2.21--2.69
@140F..0.493--0 .667
maybe there are different triumph model iat"s?
06-04-2011, 09:03 PM
#27
what?
the resistance table I have is showing that it is very, very close?
I only went to 176F on the triumph.
Tested @68 *F (20c) = 2.27 Ohms
@176*F (80c) 0.29 - 0.35 Ohms
ours...Air temperature 68F--2.21--2.69
@140F..0.493--0 .667
maybe there are different triumph model iat"s?
the resistance table I have is showing that it is very, very close?
I only went to 176F on the triumph.
Tested @68 *F (20c) = 2.27 Ohms
@176*F (80c) 0.29 - 0.35 Ohms
ours...Air temperature 68F--2.21--2.69
@140F..0.493--0 .667
maybe there are different triumph model iat"s?
It ends up showing the wrong temperature values with the OE calibration table.
Sorry to burst your bubble.
I tried several different sensors, including the one you are talking about (as referenced on the RX-7 club). It just didn't work.
06-08-2011, 11:01 AM
#29
well just read something that helped me understand this realtionship with the IAT. So I thought I would share in that it may help someone else.
"The MAF output frequency is a function of the power required to keep the airflow sensing element at a fixed temperture above the measured ambient"
It just clicked when I read that.
So in essence if the iat is "off" the frequency that the MAF is sending to the PCM will be "off" also.
It is NOT just a fail safe sensor. It is active at all times.
So once again, it is of high importance to get a post boost temperture reading.
I guess it would be a BIG job to try and tune without an accurate IAT?
"The MAF output frequency is a function of the power required to keep the airflow sensing element at a fixed temperture above the measured ambient"
It just clicked when I read that.
So in essence if the iat is "off" the frequency that the MAF is sending to the PCM will be "off" also.
It is NOT just a fail safe sensor. It is active at all times.
So once again, it is of high importance to get a post boost temperture reading.
I guess it would be a BIG job to try and tune without an accurate IAT?
06-08-2011, 12:17 PM
#30
EDIT - OD, this is a question I must ask you and I really mean it sincerely and with no sarcasm:
Do you not read anything anyone else posts up here about this stuff? Do you really feel that you are operating in a vacuum and mining new territory?
OK, that was two questions.
Last edited by MazdaManiac; 06-08-2011 at 12:19 PM.
The water will make the wire really cool like a lot of air movement and it will run really rich
06-08-2011, 04:03 PM
#32
Sorry guys.
Truth of the matter is , I didnt search before I posted. I should have.
This stuff is tricky and I thought I had a small eureka moment, and I just posted up.
When it comes to my brain , I AM mining new territory. Bare with me.
I do have my stupid moments, but i dont give up easily so I may learn a few things....maybe?
Manual I have been reading must not have been proof read well.
Truth of the matter is , I didnt search before I posted. I should have.
This stuff is tricky and I thought I had a small eureka moment, and I just posted up.
When it comes to my brain , I AM mining new territory. Bare with me.
I do have my stupid moments, but i dont give up easily so I may learn a few things....maybe?
Manual I have been reading must not have been proof read well.
06-08-2011, 04:20 PM
#33
Well, the MAF and IAT stuff is already pretty well sorted from both a mechanical/electrical perspective and a tuning one.
There are already several good discussions here about the function of the MAF and IAT as well as wiring diagrams that explain how to hook everything up so that there are no false readings or interference.
There are already several good discussions here about the function of the MAF and IAT as well as wiring diagrams that explain how to hook everything up so that there are no false readings or interference.
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