Water/Methanol injection
Got my water/meth injection system installed this afternoon; probably have about 6 hours of work total into the project.
I mounted the 5 gallon tank under my flatbed, and flush mounted a fuel cell filler cap in the top of the bed. I have to climb up there to fill it with water, but it was really the only place I had room, and it takes up otherwise dead space that I really couldn't use for anything else.
The controller is mounted in the cab under the glovebox; it has adjustments for cut in and full flow boost settings. I currently have it set to begin flow at about 7 psi (just above the boost I get at 55 on flat ground) and full flow at 15psi (the max boost level I currently can get).
I pulled off the intake elbow and drilled 2 holes in it for the jets; I chose to use dual 550cc/min nozzles for this setup.
I didn't do any kind of scientific test, but I did drive it a few times up some hills at a set speed with and without the system operating. It lowers my EGT's noticeably; about 100-200 degrees depending on load and RPM, and when I let the engine idle after a hard pull the EGT's are several hundred degrees lower. The biggest benefit though, is that I can no longer hit 1200 degrees EGT no matter how long I keep my foot on the floor (without the system operating, it hits 1200 degrees in about 30 seconds). This should allow me to get another turn or two on the fuel screw
After about 50 miles of hard driving, I used about 2 gallons of water...that's quite a bit more than I was expecting. I am thinking that I may raise the cut in pressure up another PSI or two to try to reduce the water consumption.
I'll be picking up a few gallons of methanol this weekend and experimenting with low concentrations...
Here's a link to a video showing the water jets operating in the intake elbow:
[media]http://www.youtube.com/watch?v=dshS705qSbs[/media]