BernHard
24th December 2021, 12:02 PM
Pending a professional tune and installation of a watermist injection system into my D4 TDV8, I came across this little video just the other day;
The truth about water injection in modern engines | Auto Expert John Cadogan - YouTube (https://youtu.be/j0P4j_kXi5A)
Apparently, you can get a significant power and efficiency boost by simply spraying water on your intercooler... I thought nothing more of it, but remembered it because it was interesting.
Then just this morning, I noticed that the windscreen washers were plumbed back up the wrong way around (after the V8 install). So while I was down in the wheel arch I noticed something interesting... both my windscreen washer pump, and my headlight washer pump are identical. Which means for some reason in my disco, there is a seperate relay circuit for left and right headlight washers.
So I found the relay under the bonnet, and used a bridge to test my theory. And guess what I found out? If you bridge the wrong circuit (positive to positive) you blow a 30A fuse! But if you replace the fuse, and actually look at the disgram on the relay to bridge the right circuits, one will squirt the left headlight, and the other the right...
So this had me thinking... I could plumb both headlight washers into a common line from one side of the pump. Then plumb a garden irrigation spray system to spray onto the radiators and intercooler from the other side of the pump. Then manually install a 3 way toggle switch into the relay. One side of the toggle will wash my headlights, and the other side of the toggle will cool my intercooler, giving me that cheap, easy, and safe performance boost.
Its worth a try and a play around, so I'm heading down to the hardware store this afternoon and will give it a whirl.
Stay tuned for install and results.
The truth about water injection in modern engines | Auto Expert John Cadogan - YouTube (https://youtu.be/j0P4j_kXi5A)
Apparently, you can get a significant power and efficiency boost by simply spraying water on your intercooler... I thought nothing more of it, but remembered it because it was interesting.
Then just this morning, I noticed that the windscreen washers were plumbed back up the wrong way around (after the V8 install). So while I was down in the wheel arch I noticed something interesting... both my windscreen washer pump, and my headlight washer pump are identical. Which means for some reason in my disco, there is a seperate relay circuit for left and right headlight washers.
So I found the relay under the bonnet, and used a bridge to test my theory. And guess what I found out? If you bridge the wrong circuit (positive to positive) you blow a 30A fuse! But if you replace the fuse, and actually look at the disgram on the relay to bridge the right circuits, one will squirt the left headlight, and the other the right...
So this had me thinking... I could plumb both headlight washers into a common line from one side of the pump. Then plumb a garden irrigation spray system to spray onto the radiators and intercooler from the other side of the pump. Then manually install a 3 way toggle switch into the relay. One side of the toggle will wash my headlights, and the other side of the toggle will cool my intercooler, giving me that cheap, easy, and safe performance boost.
Its worth a try and a play around, so I'm heading down to the hardware store this afternoon and will give it a whirl.
Stay tuned for install and results.