speed density converted ppl please stand up
Aug 14, 2012, 07:51 PM
#18
Stock turbo, full bolt-on with kelford 272 cams, 3 bar map sensor and fuel temp sensor. I have nothing bad to say about speed density other than it was a breeze to convert from maf and to tune. I have been running it for 6 months with no negatives
Aug 14, 2012, 08:37 PM
#20
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Drove nearly 700 miles this past weekend at elevations varying from 180ft above sea level to 2300ft above sea level and temperatures from 65 degrees to 94 degrees with no issues. Cold start and idle is fantastic as well. All in all I am another happy ER customer!
Aug 15, 2012, 07:30 AM
#25
People have been doing it the old fashioned way so long that I may just go that route. I'm not sure if it'll work but maybe I could install the AIT sensor in the intake manifold. It's an older Magnus version 2 sheet metal piece with a MAP thermal spacer so I'm not sure how consistent it'll be. It'll be a little while before I go SD as I'm just trying to enjoy even being able to drive the car now so I have some time to figure this out.
Aug 15, 2012, 07:44 AM
#26
and that sets up your ve table and your map setup.
People have been doing it the old fashioned way so long that I may just go that route. I'm not sure if it'll work but maybe I could install the AIT sensor in the intake manifold. It's an older Magnus version 2 sheet metal piece with a MAP thermal spacer so I'm not sure how consistent it'll be. It'll be a little while before I go SD as I'm just trying to enjoy even being able to drive the car now so I have some time to figure this out.
Aug 15, 2012, 08:05 AM
#27
My understanding is as follows:
Difference between intake main, and pre-intake manifold for the IAT is that it is much more accurate pre-intake manifold due to the fact that the intake manifold becomes greatly heat soaked and will actually heat up the physical sensor and give an inaccurate reading.
since air is moving through the intake manifold quite quickly, it is not as subject to the heat soak that the sensor is. conversely, a sensor mounted on the UICP just before the throttle body won't have the same degree of heat soak.
also, the IAT when mounted on the intake manifold doesn't react fast enough to temperature changes in charge air, it lags giving another false reading.
have tested both setups on turbo-charged honda applications, which come with the IAT on the intake manifold on OBD1 cars, and in the intake tube on OBD2 cars. I logged IAT temperatures in both positions on the same car/setup through Hondata, and the readings where vastly different.
I don't have any data for a MAF car converted to speed density for an IAT vs. Fuel Temp sensor.
Interesting discussion, would love to hear/learn more about speed density conversions on these cars.
Difference between intake main, and pre-intake manifold for the IAT is that it is much more accurate pre-intake manifold due to the fact that the intake manifold becomes greatly heat soaked and will actually heat up the physical sensor and give an inaccurate reading.
since air is moving through the intake manifold quite quickly, it is not as subject to the heat soak that the sensor is. conversely, a sensor mounted on the UICP just before the throttle body won't have the same degree of heat soak.
also, the IAT when mounted on the intake manifold doesn't react fast enough to temperature changes in charge air, it lags giving another false reading.
have tested both setups on turbo-charged honda applications, which come with the IAT on the intake manifold on OBD1 cars, and in the intake tube on OBD2 cars. I logged IAT temperatures in both positions on the same car/setup through Hondata, and the readings where vastly different.
I don't have any data for a MAF car converted to speed density for an IAT vs. Fuel Temp sensor.
Interesting discussion, would love to hear/learn more about speed density conversions on these cars.
Aug 15, 2012, 08:25 AM
#28
My understanding is as follows:
Difference between intake main, and pre-intake manifold for the IAT is that it is much more accurate pre-intake manifold due to the fact that the intake manifold becomes greatly heat soaked and will actually heat up the physical sensor and give an inaccurate reading.
since air is moving through the intake manifold quite quickly, it is not as subject to the heat soak that the sensor is. conversely, a sensor mounted on the UICP just before the throttle body won't have the same degree of heat soak.
also, the IAT when mounted on the intake manifold doesn't react fast enough to temperature changes in charge air, it lags giving another false reading.
have tested both setups on turbo-charged honda applications, which come with the IAT on the intake manifold on OBD1 cars, and in the intake tube on OBD2 cars. I logged IAT temperatures in both positions on the same car/setup through Hondata, and the readings where vastly different.
I don't have any data for a MAF car converted to speed density for an IAT vs. Fuel Temp sensor.
Interesting discussion, would love to hear/learn more about speed density conversions on these cars.
Difference between intake main, and pre-intake manifold for the IAT is that it is much more accurate pre-intake manifold due to the fact that the intake manifold becomes greatly heat soaked and will actually heat up the physical sensor and give an inaccurate reading.
since air is moving through the intake manifold quite quickly, it is not as subject to the heat soak that the sensor is. conversely, a sensor mounted on the UICP just before the throttle body won't have the same degree of heat soak.
also, the IAT when mounted on the intake manifold doesn't react fast enough to temperature changes in charge air, it lags giving another false reading.
have tested both setups on turbo-charged honda applications, which come with the IAT on the intake manifold on OBD1 cars, and in the intake tube on OBD2 cars. I logged IAT temperatures in both positions on the same car/setup through Hondata, and the readings where vastly different.
I don't have any data for a MAF car converted to speed density for an IAT vs. Fuel Temp sensor.
Interesting discussion, would love to hear/learn more about speed density conversions on these cars.
