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#1
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about MAF sensors...
is all subaru MAF sensors the same? or are they all different?
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#2
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you should do a search for that. i believe i read that there was a didn't subaru MAF you could swap in with.
i'm sure someone will bring that answer up
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1992 Subaru SVX LS~L Ebony Pearl 1992 Dodge Stealth R/T Firestorm Red 1992 Subaru SVX LS~L Pearl White 1992 Subaru SVX LS~L Ebony Pearl JDM 6MT/DCCD 2007 Subaru Legacy Spec B. Diamond Grey Metallic |
#3
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Quote:
It will probably make it run, but it won't give the same performance or economy. Harvey.
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One Arm Bloke. Tell it like it is! 95 Lsi. Bordeaux Pearl, Aust. RHD.149,000Kls Subaru BBS wheels. 97 Liberty GX Auto sedan. 320,000Kls. 04 Liberty 30R Auto Premium. 92.000kls. |
#4
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Quote:
Real evidence is called for.
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Trevor, New Zealand. As a child, on cold mornings I gladly stood in cowpats to warm my bare feet, but I detest bull$hit! |
#5
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Quote:
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-Jason (8/23/07-Present) 1995 Subaru SVX LSi (197k) Polo Green (#1102) 03/95 Mods: DDM Tuning 4500k 35w Low Beam HID, 100w H3 Bulbs, Extra Ground Cables, 15 minute $12.96 mod, svxfiles designed transmission mount (), sporting a "new" tail light bar, silver BBS rims, custom power steering cooler (one that doesn't dump ATF constantly), new negative lead cable, no more third or fourth gear (1977-Present) 1977 Chevrolet Corvette (81k) Silver (12/01/2011-Present) 2005 Subaru Outback 2.5i Limited 5MT (97k) I have a bad feeling about this. -Obi Wan Kenobi |
#6
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MAF Calibration.
The MAF sensor measures the mass air flowing through the sensor and assigns a voltage reading of between 0V and 3.8V, from no air flow to full air flow.
Obversely a MAF for a 1800cc engine, fitted to a 3300cc engine will read 3.8V at about 1/2 throttle. That is why we fit the 350Z MAF to the blown engines, it equates 3.8V to a higher air flow than the SVX one. Harvey.
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One Arm Bloke. Tell it like it is! 95 Lsi. Bordeaux Pearl, Aust. RHD.149,000Kls Subaru BBS wheels. 97 Liberty GX Auto sedan. 320,000Kls. 04 Liberty 30R Auto Premium. 92.000kls. |
#7
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Quote:
In the supercharged application quoted, it would have not been practical to modify the ECU. Furthermore an increase in airflow was involved, making an increased cross section desirable. MAF measurement is usually achieved by heating with an electric current, a wire/gauze/grid whatever, which is suspended in the engine’s air stream. The wire's electrical resistance increases with the temperature, which limits electrical current flowing through a circuit. When air flows past the wire, the wire cools, decreasing its resistance, which in turn allows more current to flow through the circuit. As more current flows, the wire’s temperature increases until the resistance again reaches an equilibrium which is relative to airflow. N.B. The amount of CURRENT required to maintain the wire’s electrical resistance is directly proportional to the mass of air flowing past the wire. If air density increases due to an atmospheric pressure or temperature change, but the moving air volume remains constant, the denser air will conduct more heat from the wire, so that as a result, higher mass airflow will be indicated.
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Trevor, New Zealand. As a child, on cold mornings I gladly stood in cowpats to warm my bare feet, but I detest bull$hit! |
#8
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well...thanks for all the info but...my main question is...
is all subaru MAF sensors the same? or are they all different? meaning by will my 93 impreza MAF sensor work with my 92 SVX?? |
#9
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Someone has posted that it does work, but your top end is affected. Sorry, but I don't remember who it was...
I know that MAFs from most mid 90's Subaru's will fit and they look identical except for the color of the tag.
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Dave - 03 Baja - 92 SVX - 86 Brat - 08 OB 3.0 |
#10
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Quote:
Harvey.
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One Arm Bloke. Tell it like it is! 95 Lsi. Bordeaux Pearl, Aust. RHD.149,000Kls Subaru BBS wheels. 97 Liberty GX Auto sedan. 320,000Kls. 04 Liberty 30R Auto Premium. 92.000kls. |
#11
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Quote:
Physical evidence in respect of physical size and fit, as well as electrical characteristics are required. If you have the two in question, you can decide on the physical aspects. Measure the resistance of both and make a comparison as a first option. You could then fit the Impreza MAF and check the following, i.e. the standard figures which apply. I would first do a check with your existing unit in place and before removal, for obvious reasons. With the engine idling, connector plugged in :- Terminal number 1, should have 13 - 14 volts to ground. Terminal number 4, should have 0.8 - 1.2 volts to ground. When the engine in my car was revved with the car stationery, voltage rose from 1.1 to 3 volts. Looking into the connector plug as if it were disconnected, with the catch uppermost, the pins are in a row numbered left to right. Pin 1 is therefore, at the left hand end. I trust this will be of assistance. Trevor.
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Trevor, New Zealand. As a child, on cold mornings I gladly stood in cowpats to warm my bare feet, but I detest bull$hit! |
#12
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thanks everyone..
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