Mass Air Flow ?
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Joined: Apr 2004
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Mass Air Flow ?
Hey, i have a 99 explorer 6 SOHC . I know with the older trucks switching the mass air flow sensor in a 6, with the MAFS from an 8 would increase power. Does anyone know if it would still work on the 99. Only reason im not sure is the OBD2, im just wondering if the computer will just compensate and cancel it out. Any info would be appreciated
Junior User
Joined: Dec 2003
Posts: 61
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From: Louisville, KY
my advice--unhook the MAF connector and put a 29K Ohm resistor between the wires. Leave it unhooked form the sensor. Its what I did to my car and it gets a LOT more horsepower! (gave me like 20). you can get one at radio shack for about a buck.
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Joined: Dec 2003
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From: Louisville, KY
The connector is on the intake hose going from the filter box to the intake manifold. There is a connector with two wires. Thats the one that gets the resistor. Gas milage dropped about 1 mpg if that in the city and not noticable on the highway for my truck
Elder User
Joined: Aug 2002
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From: Cincinnati
Do you really want to take advice from someone who can't tell the difference between an IAT and a MAF. Many of the things that fool the computer, like adjusting the TPS, only work for a short period of time till the computer relearns. That is why there are O2 sensors. A 29K resistor fools the computer into thinking the air is about 90 degrees. That probably makes the MAF air mass calculation higher. Im not that sure that performance doesn't fade after 100 miles. These computers are very adaptive so the vehicles can use lower tolerance sensors and adapt as blowby and other engine conditions change.
Last edited by Opera House Works; May 10, 2004 at 12:04 PM.
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Elder User
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From: Cincinnati
It's worse than I thought
DEG..........OHMS W/180K
85................25K.........22K
80................29K.........25K....(29K fixed resistor)
70................38K.........31K
50................60K.........45K
RESISTANCE IN PARALLEL = (R1 X R2) / (R1 + R2)
Today it is almost 85, probably higher than that on a four lane highway. From the chart there wouldn't be any power boost today! Did seem like a good idea when it was 60 outside. If you have only $.003 to spend on engine improvement, put a 180K or higher resistance in parallel with the IAT. This would at least track the temperature. I don't recommend any of this.
DEG..........OHMS W/180K
85................25K.........22K
80................29K.........25K....(29K fixed resistor)
70................38K.........31K
50................60K.........45K
RESISTANCE IN PARALLEL = (R1 X R2) / (R1 + R2)
Today it is almost 85, probably higher than that on a four lane highway. From the chart there wouldn't be any power boost today! Did seem like a good idea when it was 60 outside. If you have only $.003 to spend on engine improvement, put a 180K or higher resistance in parallel with the IAT. This would at least track the temperature. I don't recommend any of this.