luke.weiser
Well-known member
Ok. There is no denying it. The Evry mod (http://forums.tdiclub.com/showthread.php?t=257122) is great. It's cheap and safe as long as it's used casually and properly tuned.
However, the only issue me and others who try to keep a clean, stock interior is the eyesore switch and potentiometer that must be mounted within reach of the driver, for ease of operation and tuning that is.
Luckily, I have a solution. Mk3 and Mk4 chassis VWs in Europ came equipped with factory fog lights. For this example, I will talk about the Mk3 because that's what I have. The Mk4 uses the same switch, just different shape, and wiring. The lights for both chassis were operated by a three position switch(off, one connection, both connection) integrated into the headlight switch. However, North American cars didn't have fog lights, thus didn't have this special switch. You can buy one and install it into any NA Mk3, it is a direct fit, however, since Mk3s don't have fog lights, the foglight positions serves no purpose.
For this mod, we will use the three positions on the Euro Switch to make a stealthy way to activate the Evry Mod, as well as making two different tune options: slight power and full power.
First things first, you need TWO potentiometers. you'll be creating a high resistance circuit, to be active in the first position, then a low resistance circuit for the signal from to flow when both circuits are open. Should look like this on paper:
With this arrangement, when the switch is pulled to the first position, the signal can only flow through the high resistance path. This provides a mild increase in power and much better throttle response, with mild smoke.
However, when both circuits are open, power chooses to flow through the path of lowest resistance. This one can be tuned as low as you want, and since lower resistance means more fuel, more smoke and power can be achieved with the lowering of resistance.
This is what should happen in the final product:
Now, onto the wiring.
I WILL EDIT LATER WITH EXACT DIRECTIONS ON WHICH PINS I USED IN THIS INSTALL. FOR NOW, I WILL GIVE YOU A BRIEF OVERVIEW OF WHAT I DID.
We will have to dissect the pigtail that connects to the headlight switch. On NA cars, most of the wires we need are there and unused, but there is an empty pin that we need to use. You will have to find a suitable pin to add to the pigtail. You have to go to a junkyard and cut out a pigtail from a VW in order to remove this piece
Install it into your pigtail. You now have all the necessary pins to make your Euro switch work.
Tuning is easy. If you mount the pots in a box together, you can mount it under your dash within reach. That way, you can just reach under and adjust each tune whenever you want.
My Ahu likes the high circuit to be around 800 ohms, and the low circuit gets down to about 580 ohms before the engine stalls. AHU and ALH engines are different, so tuning it properly is up to you.
I have been running this in my car for months, it's really cool. I love how I don't have to have a huge eyesore on my dash, its stealthy and nutty I can run with the Mod off, pull the Euro switch out once for romping around, and all the way for big power and rolling coal.
However, the only issue me and others who try to keep a clean, stock interior is the eyesore switch and potentiometer that must be mounted within reach of the driver, for ease of operation and tuning that is.
Luckily, I have a solution. Mk3 and Mk4 chassis VWs in Europ came equipped with factory fog lights. For this example, I will talk about the Mk3 because that's what I have. The Mk4 uses the same switch, just different shape, and wiring. The lights for both chassis were operated by a three position switch(off, one connection, both connection) integrated into the headlight switch. However, North American cars didn't have fog lights, thus didn't have this special switch. You can buy one and install it into any NA Mk3, it is a direct fit, however, since Mk3s don't have fog lights, the foglight positions serves no purpose.
For this mod, we will use the three positions on the Euro Switch to make a stealthy way to activate the Evry Mod, as well as making two different tune options: slight power and full power.
First things first, you need TWO potentiometers. you'll be creating a high resistance circuit, to be active in the first position, then a low resistance circuit for the signal from to flow when both circuits are open. Should look like this on paper:
With this arrangement, when the switch is pulled to the first position, the signal can only flow through the high resistance path. This provides a mild increase in power and much better throttle response, with mild smoke.
However, when both circuits are open, power chooses to flow through the path of lowest resistance. This one can be tuned as low as you want, and since lower resistance means more fuel, more smoke and power can be achieved with the lowering of resistance.
This is what should happen in the final product:
Now, onto the wiring.
I WILL EDIT LATER WITH EXACT DIRECTIONS ON WHICH PINS I USED IN THIS INSTALL. FOR NOW, I WILL GIVE YOU A BRIEF OVERVIEW OF WHAT I DID.
We will have to dissect the pigtail that connects to the headlight switch. On NA cars, most of the wires we need are there and unused, but there is an empty pin that we need to use. You will have to find a suitable pin to add to the pigtail. You have to go to a junkyard and cut out a pigtail from a VW in order to remove this piece
Install it into your pigtail. You now have all the necessary pins to make your Euro switch work.
Tuning is easy. If you mount the pots in a box together, you can mount it under your dash within reach. That way, you can just reach under and adjust each tune whenever you want.
My Ahu likes the high circuit to be around 800 ohms, and the low circuit gets down to about 580 ohms before the engine stalls. AHU and ALH engines are different, so tuning it properly is up to you.
I have been running this in my car for months, it's really cool. I love how I don't have to have a huge eyesore on my dash, its stealthy and nutty I can run with the Mod off, pull the Euro switch out once for romping around, and all the way for big power and rolling coal.
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