So... a buddy of mine just got a Red 90T off of Ebay last week with subframe damage being the only problem. I met with him today to check out the ride, and wow was I amased at the condition it was in. 18 inch staggerd wheels, gray leather, no cracks in dashboard, chrome dash bezel and one the cleanest engines bays I have ever seen on a Sup in person. Well..anyway I was checking out his setup and came across a little black box wired into the Maf meter connector harness. It seems to be a cold air resistor mod, anyone know anything about this mod?.. I came across an MX6 forum that performed a similar mod that got rid of spark cut.
Maf meter resistor
- Thread starter Cya
- Start date
Stock Turbo only measures air velocity and ambient pressure, no reference to temperature, therefore, cold air resistor mods wouldn't work.
The AFM (Air Flow Meter) which sits directly behind the air filter is the single biggest input into when the ECU triggers fuel cut from overboosting, so anything wired in there is likely to be a fuel cut defender. Any markings on the box? Can you describe what wires it's plugged into on the AFM plug?
The other thing it could be is a MAFT, (Mass Air Flow Translator) which lets us use a MAF measuring device instead of the stock AFM, however, this would connect to a fair number of wires other than the AFM plug... The labels on the MAFT boxes are prone to falling off.
The AFM (Air Flow Meter) which sits directly behind the air filter is the single biggest input into when the ECU triggers fuel cut from overboosting, so anything wired in there is likely to be a fuel cut defender. Any markings on the box? Can you describe what wires it's plugged into on the AFM plug?
The other thing it could be is a MAFT, (Mass Air Flow Translator) which lets us use a MAF measuring device instead of the stock AFM, however, this would connect to a fair number of wires other than the AFM plug... The labels on the MAFT boxes are prone to falling off.
My car had a intake air temp sensor built into the AFM, maybe US cars are diffrent from Canadian??
its THA on the TCCS, heres the TSRM shoing how to test it http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?Section=FI&Page=94
AFM's have to calculate air flow from speed, density and temprature.
its THA on the TCCS, heres the TSRM shoing how to test it http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?Section=FI&Page=94
AFM's have to calculate air flow from speed, density and temprature.
GrimJack said:
Nope. No Maft (I have one of those, still trying to work the kinks out of it). The box has no markings (it looks generic), the wires connected to it are red and black. With no wires connected directly to the meter itself.
Its not a temp sensor either.
From the looks of it, you can tell its aftermarket.
nosechunks said:
thats an n/a afm. the turbo ones are different. it uses a karmann vortex sensor that detects the frequency of the air resonating inside the afm tunnel to determine the mass of air, instead of a flap door afm like the n/a
http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?Section=FI&Page=96
Whoops. Wrong page, thats the right one. It still has a IAT sensor in the turbo AFM. temprature is a big factor in air flow calculation, temp changes density.
THA is Thermal Air, regaurdless of turbo or non turbo. The only AFM/MAF's that i know of that dont have intake air temp sensors are the 3 wire GM MAF's. But the way they calculate air flow compensates for intake air temp by design.
Whoops. Wrong page, thats the right one. It still has a IAT sensor in the turbo AFM. temprature is a big factor in air flow calculation, temp changes density.
THA is Thermal Air, regaurdless of turbo or non turbo. The only AFM/MAF's that i know of that dont have intake air temp sensors are the 3 wire GM MAF's. But the way they calculate air flow compensates for intake air temp by design.
Haven't seen the guy in a while, I think hes still trying to get his car fixed. But the wires coming from the box were black and red. It's not the GM sensors black box, this box was total seperate from the air meter. It was spliced into the harness.
He is also trying to get in contact with the previous owner to fing out what this device is.
He is also trying to get in contact with the previous owner to fing out what this device is.