2006 mazdaspeed6 water meth questions

[chickenwafer]

I know people who run meth kits (straight meth) and NO intercooler, because the heat evaporation properties of methanol are that powerful. It acts like a chemical intercooler. So you will cool down and create a much more dense intake charge just with water/meth.

The tuning part is required to get the most power of out water/meth. Like I said earlier, if you just install a kit and do no tuning, it's not really going to make you anymore power, but that isn't to say it isn't beneficial. While the water/meth will significantly cool down and create a more dense intake charge, it will also displace fuel and air in the combustion chamber (because water isn't compressible or combustible), hurting overall volumetric efficiency. However, it's nearly a wash due to the cooler, denser, intake charge provided by the water/meth.

Other non-power benefits includes literally steam cleaning the motor from the inside, reducing intake temperatures and thus combustion chamber temperature and pressure which reduces overall engine stress, and can improve MPG.

[erod550]

Plus, if you get KR on hot days, the water/meth should help with that, even without a tune.