I did, worked fine but 50/50 mix was the best result I had plus buying 5 gallon buckets was cheaper.
Yup, that is the pain especially if you dont have any data logging capabilities either. Your controller is boost referenced right? Is there any adjustments that can be done on the controller?
yeah, that was what I was talking about. I ran mine at nearly the same pressure. The point at which the fluid is injected as a significant effect on the cooling effect too.
I found running more pressure versus bigger nozzles worked better. The higher pressure helps "vaporize" the fluid which yielded cooler temps. I also had a solenoid close to the nozzle to make sure that fluid (drops) wasn't pulled at idle.
Meth is a great tuning tool once you get it dialed in. The hardest part is just figuring out how to get the hardware set up. The actual install is fairly straight forward.
Oh, windshield wiper works well if you are in a pinch for meth. Heck it works great to run all the time... Just make sure to run the blue stuff with as little additives as possible.
I ran the snow performance kit on my last car (mk5 gti) which was a turbo car. It made a HUGE difference. It is a very stable system and once you learn how to use it, it is very effective. I know the cars are different but the concept is the same. Let me know if I can help you with the setup...