Vats
I have one of the Baker Electronics boxes sitting in my toolbox if you want it. It's doing me no good since I turned it off in the PCM. I just needed it to get the car started before I got HPTuners.
PM me an address and it's yours. Merry Christmas!
-Matt
PM me an address and it's yours. Merry Christmas!
-Matt
theres a couple ways to do it.
heres how it works:
there is a VATS module. this module looks for a specific resistance between two wires. the key has a resistor in it.
when you put the key in the column, contacts connect that resistor to two thin wires. these wires go back into the vats module
assuming its the correct key, the VATS module sends a specific square wave frequency into the PCM. when the PCM sees this, it allows the engine to run. without it, the engine never runs.
there are three ways to easily bypass it.
1. measure the resistance the correct key has. buy a resistor that matches it, and connect it between the two contact wires leading into the VATS system. this lets it think the key is there... of course for this to work, you have to have the VATS box, and the key.
2. make a simple circuit (a 555timer one would do easily) and send the signal directly to the PCM. this is what most of thoes "vats delete" boxes are.
3. edit the PCM code to delete vats... using HP tuners or LS1 edit, its a simple uncheck of a box.
heres how it works:
there is a VATS module. this module looks for a specific resistance between two wires. the key has a resistor in it.
when you put the key in the column, contacts connect that resistor to two thin wires. these wires go back into the vats module
assuming its the correct key, the VATS module sends a specific square wave frequency into the PCM. when the PCM sees this, it allows the engine to run. without it, the engine never runs.
there are three ways to easily bypass it.
1. measure the resistance the correct key has. buy a resistor that matches it, and connect it between the two contact wires leading into the VATS system. this lets it think the key is there... of course for this to work, you have to have the VATS box, and the key.
2. make a simple circuit (a 555timer one would do easily) and send the signal directly to the PCM. this is what most of thoes "vats delete" boxes are.
3. edit the PCM code to delete vats... using HP tuners or LS1 edit, its a simple uncheck of a box.
On The Tree
Joined: Dec 2004
Posts: 104
Likes: 0
From: Bama
Originally Posted by Scooter70
I have one of the Baker Electronics boxes sitting in my toolbox if you want it. It's doing me no good since I turned it off in the PCM. I just needed it to get the car started before I got HPTuners.
PM me an address and it's yours. Merry Christmas!
-Matt
PM me an address and it's yours. Merry Christmas!
-Matt
wow nice guy...
Originally Posted by BoonesZ
wow nice guy...
Staging Lane
Joined: Apr 2004
Posts: 99
Likes: 0
From: Santa Clara, CA
Originally Posted by Payne
Can someone explain to me how I can build a VATS bypass?
I assume that it is only $5 or less in Radio Shack parts, correct?
I assume that it is only $5 or less in Radio Shack parts, correct?
The actualy cost was probably $5, but you can't just buy the exact quantity you need from Radio Shack, so expect to spend around $15, but you'll have enough parts to make 2 or 3 with the exception of the 555 timer chip, you buy those individually.
here are 2 links for reference:
Dont' be confused by the labeling, in the image, C3 is the capacitor the calculator below uses as C1.
-Marc
http://home.cogeco.ca/~rpaisley4/LM555.html#2
http://home.hiwaay.net/~davida1/passkey.htm
Last edited by svt; Dec 17, 2004 at 03:11 PM.
Staging Lane
Joined: Apr 2003
Posts: 87
Likes: 0
From: OKC, oklahoma
I actually found a vats module from a salvage yard car, lt1, ls1 or caprice. Mine is a caprice and worked fine. I have a friend at a gm dealership who ran the numbers and gave me the key code and i looked up resistance there. All you have to do from there is solder a resister in place, hook up a key on, battery hot, ground and the vats signal wire. works perfect.
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