Hey Guys I thought I’d chime in with a picture i found ages ago when i was researching wmi, it’s one of those a picture tells a 1000 words...
The only changes in blue yellow and green runs is they changed the ignition timing, which you can see from where the combustion pressure starts to increase. The timing with the water methanol injection turned on is somewhere between the yellow and red runs.
It's clear with the water methanol injection turned on that your peak combustion pressure is reduced, whilst increasing the average combustion pressures and most likely the combustion pressure at the angle where peak torque is made during a combustion cycle.
I also have the hfs-6 aquamist kit, if anyone has any questions, its been a while since i looked at the other kits, so I can’t quite remember all the reasons why i choose it over the other systems. It has a very quick response time, theres no overspray, you can measure flow, detect blockages and overflow, and can send a signal to ecu/ebc when the wmi kit is not working or turned off. I haven’t figured out the best way to set up the failsafe yet.
It detects the duty cycle of your injectors and increases flow linearly with the injector duty cycle. You can also add in a map sensor signal so it can compensate the flow for increased boost.
Im using a AIS 3 gallon tank, it was one of the neatest and tidiest tanks i could find, the wmi pump bolts up underneath it, making the install fairly tidy.
http://www.alcoholinjectionsystems.com/p117/AIS-3-Gallon-Competition-Trunk-Mount-Water-Methanol-Injection-Tank/product_info.html
For anyone who’s interested to know how much wmi they should be injecting, a aquamist site has this link on calculating the jetting:
http://howertonengineering.com/tech-info/calculating-jetting/
Also anyone that’s considering what ratio to run, its usually considered that a 50:50 mix is the best, as its not flammable and you get a better cooling effect on the charge due to Daltons law of partial pressures. Simply you can cool the air down more with a mixture of 50/50 than just using straight water.
Regards
Jarrod