el_jefe
09-18-2010, 04:29 PM
(Found this on the hard drive, I don't remember who posted it originally, but it works!)
http://i9.photobucket.com/albums/a86/orionis996/AOBE.jpg
This device will work on any car that has a MAP or MAF type load sensor with a varrying voltage from 0-5v to defeat overboost fuel cut. They also work on most Neons in a similar fashion when adding forced induction.
Ok, here's the directions:
WARNING: You are completely eliminating a safety feature that is built into the ECM of your car by installing this product. If you accidentally make too much boost, the car WILL NOT shut down to save itself. If you adjust the eliminator down below cutout further than needed, your air fuel ratio will become lean, possibly damaging your engine. You are directly controlling the maximum amount of boost/airflow the computer sees by turning the potentiometer. If you need an overboost eliminator, you probably know that you should be adding fuel to go with the added boost. You are taking the life of your engine in your hands. Be careful. I am not responsible for any damages due to the use of this product.
Tuning:
First you must find out where the cutout is for your particular car. Most are between 4.3v and 4.7v. To find out on your particular car, you must hit cutout and note the boost level that it happens at. Then the next step is to hook a source of air pressure up to both your MAP sensor and to your boost gauge while the ignition is in the "ON" position, but not running. Increase the air pressure using a regulator until the boost gauge reads the boost level where you hit cutout. Now, hook a digital voltmeter to a good ground, and to the signal wire of the MAP sensor. Measure the voltage on the MAP sensor signal wire with the digital voltmeter. This is really close to your cutout voltage. Write the voltage you measure now down. Now you will want to max out the MAP sensor voltage. On a 1 bar MAP(non turbo) 1 or 2psi should do it. On a 2 bar MAP sensor(stock on most turbocars), 16psi should do it. On a 3bar(S60, aftermarket, some stock, etc), you'll want to send it about 30psi. You should get around 5 volts depending on the resistance of your wiring harness and quality of your MAP sensor. Now turn off the ignition, release the air pressure, and install the overboost eliminator(see below). Once the eliminator is installed, you will want to hook the air pressure back up to the MAP sensor and turn the ignition to "ON" again. Max out the MAP sensor by using the appropriate air pressure, either 2psi, 16psi or 30psi. Note what your reading is on the voltmeter. It will probably be around 2 or 3 volts now, since the potentiometers are shipped with the wiper close to the center. Slowly turn the potentiometer screw clockwise and note the increasing voltage. When you see just above the voltage that you have determined is close to cutout for your car, stop turning the screw. Now remove the air pressure from the MAP sensor, reconnect everything, and take the car for a test drive. Be careful, watch your gauges, and only hold it at boost long enough to see if you are hitting cutout, until you are sure of your settings. If you don't hit cutout, adjust the screw clockwise in small incriments until you do, then back of a tiny bit. If you hit cutout, adjust counterclockwise until you "just" no longer hit cutout. You want voltage to be as close as you can get to cutout, without hitting it. .05v less than cutout works well for me. So if your cutout is 4.65v, set it at 4.60v. When you are done, wrap the overboost eliminator adjusting screw hole with electrical tape and secure the overboost eliminator in an appropriate place on the vehicle's chassis using wire ties or other means. If you want to lock the potentiometer in it's final setting, some super glue will keep the pot from turning, possibly forever...
Installation:
Disconnect your negative battery cable. Locate your Map sensor. On pre 87 cars it should be in the passenger's side kick panel by the logic module, on later cars it will be located under the hood. On some 87 cars it could be either place. On Neons, it should be on the intake manifold and will not have a vacuum line. On most cars there are 3 wires going to the MAP sensor and 1 vacuum line. If you are having trouble locating it, consult your service department at the dealer or a factory service manual for your car. You will have 3 wires connected to your MAP sensor on most cars. Neons after 96 have 4 wires because the intake temp sensor is integrated into the MAP sensor. On most cars built before 87, you will find red, white, and black wires. Later cars changed wire colors at random it seems! If your car is an early one with the red, white, and black wires, connection is easy. Red to red, white to white, black to black. If you have a later car, you should consult a factory service manual for your car. The red wire on the cutout eliminator connects to the 5v+ source wire to the MAP sensor. The black one goes to the ground to the sensor, and the white one connects to the signal wire for the MAP sensor. To solder the overboost eliminator in, bare a small section of the appropriate factory wire going to the MAP sensor and then wrap the appropriate stripped wire end from the overboost eliminator around the stripped wire. You are tapping into the factory wiring in parallel, not in series. Solder and wrap well with electrical tape. Repeat for all 3 wires, then wrap the all three wires together with electrical tape. One alternative for the underhood sensor cars is to trace the wires from the MAP sensor into the car to the logic module, or over to the SBEC/SMEC/PCM and solder the overboost eliminator to those wires anywhere that it is convenient.
The overboost eliminator is fairly weather resistant, but should not be exposed to excessive heat, salt, water, or debris. If you choose to mount it under the hood, locate it carefully and be sure to wrap the adjusting screw hole with some electrical tape after you have it set. It is most at home inside the kick panel of the car, away from harms reach, or accidental tweakings of the potentiometer. It can sneak up inside some wire loom pretty easily too. It is your choice where you locate it.
Don't forget to re-connect the negative battery cable:)
Go have fun! And MAKE SURE YOU'VE GOT ENOUGH FUEL!
http://i9.photobucket.com/albums/a86/orionis996/AOBE.jpg
This device will work on any car that has a MAP or MAF type load sensor with a varrying voltage from 0-5v to defeat overboost fuel cut. They also work on most Neons in a similar fashion when adding forced induction.
Ok, here's the directions:
WARNING: You are completely eliminating a safety feature that is built into the ECM of your car by installing this product. If you accidentally make too much boost, the car WILL NOT shut down to save itself. If you adjust the eliminator down below cutout further than needed, your air fuel ratio will become lean, possibly damaging your engine. You are directly controlling the maximum amount of boost/airflow the computer sees by turning the potentiometer. If you need an overboost eliminator, you probably know that you should be adding fuel to go with the added boost. You are taking the life of your engine in your hands. Be careful. I am not responsible for any damages due to the use of this product.
Tuning:
First you must find out where the cutout is for your particular car. Most are between 4.3v and 4.7v. To find out on your particular car, you must hit cutout and note the boost level that it happens at. Then the next step is to hook a source of air pressure up to both your MAP sensor and to your boost gauge while the ignition is in the "ON" position, but not running. Increase the air pressure using a regulator until the boost gauge reads the boost level where you hit cutout. Now, hook a digital voltmeter to a good ground, and to the signal wire of the MAP sensor. Measure the voltage on the MAP sensor signal wire with the digital voltmeter. This is really close to your cutout voltage. Write the voltage you measure now down. Now you will want to max out the MAP sensor voltage. On a 1 bar MAP(non turbo) 1 or 2psi should do it. On a 2 bar MAP sensor(stock on most turbocars), 16psi should do it. On a 3bar(S60, aftermarket, some stock, etc), you'll want to send it about 30psi. You should get around 5 volts depending on the resistance of your wiring harness and quality of your MAP sensor. Now turn off the ignition, release the air pressure, and install the overboost eliminator(see below). Once the eliminator is installed, you will want to hook the air pressure back up to the MAP sensor and turn the ignition to "ON" again. Max out the MAP sensor by using the appropriate air pressure, either 2psi, 16psi or 30psi. Note what your reading is on the voltmeter. It will probably be around 2 or 3 volts now, since the potentiometers are shipped with the wiper close to the center. Slowly turn the potentiometer screw clockwise and note the increasing voltage. When you see just above the voltage that you have determined is close to cutout for your car, stop turning the screw. Now remove the air pressure from the MAP sensor, reconnect everything, and take the car for a test drive. Be careful, watch your gauges, and only hold it at boost long enough to see if you are hitting cutout, until you are sure of your settings. If you don't hit cutout, adjust the screw clockwise in small incriments until you do, then back of a tiny bit. If you hit cutout, adjust counterclockwise until you "just" no longer hit cutout. You want voltage to be as close as you can get to cutout, without hitting it. .05v less than cutout works well for me. So if your cutout is 4.65v, set it at 4.60v. When you are done, wrap the overboost eliminator adjusting screw hole with electrical tape and secure the overboost eliminator in an appropriate place on the vehicle's chassis using wire ties or other means. If you want to lock the potentiometer in it's final setting, some super glue will keep the pot from turning, possibly forever...
Installation:
Disconnect your negative battery cable. Locate your Map sensor. On pre 87 cars it should be in the passenger's side kick panel by the logic module, on later cars it will be located under the hood. On some 87 cars it could be either place. On Neons, it should be on the intake manifold and will not have a vacuum line. On most cars there are 3 wires going to the MAP sensor and 1 vacuum line. If you are having trouble locating it, consult your service department at the dealer or a factory service manual for your car. You will have 3 wires connected to your MAP sensor on most cars. Neons after 96 have 4 wires because the intake temp sensor is integrated into the MAP sensor. On most cars built before 87, you will find red, white, and black wires. Later cars changed wire colors at random it seems! If your car is an early one with the red, white, and black wires, connection is easy. Red to red, white to white, black to black. If you have a later car, you should consult a factory service manual for your car. The red wire on the cutout eliminator connects to the 5v+ source wire to the MAP sensor. The black one goes to the ground to the sensor, and the white one connects to the signal wire for the MAP sensor. To solder the overboost eliminator in, bare a small section of the appropriate factory wire going to the MAP sensor and then wrap the appropriate stripped wire end from the overboost eliminator around the stripped wire. You are tapping into the factory wiring in parallel, not in series. Solder and wrap well with electrical tape. Repeat for all 3 wires, then wrap the all three wires together with electrical tape. One alternative for the underhood sensor cars is to trace the wires from the MAP sensor into the car to the logic module, or over to the SBEC/SMEC/PCM and solder the overboost eliminator to those wires anywhere that it is convenient.
The overboost eliminator is fairly weather resistant, but should not be exposed to excessive heat, salt, water, or debris. If you choose to mount it under the hood, locate it carefully and be sure to wrap the adjusting screw hole with some electrical tape after you have it set. It is most at home inside the kick panel of the car, away from harms reach, or accidental tweakings of the potentiometer. It can sneak up inside some wire loom pretty easily too. It is your choice where you locate it.
Don't forget to re-connect the negative battery cable:)
Go have fun! And MAKE SURE YOU'VE GOT ENOUGH FUEL!