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I would like to make and fit a simple water injection system to my ea82t powered brumby. I had an intercooler set up on my old rx, but i would like to use water injection on my brumby to keep the instillation as stealth as possible. Any ideas on the best way to set this up would be very helpful.

I have just researched this and purchased a kit from Cooling mist dot com.
Buy a pump yourself from a supplier and get all the fittings and lines from CM.
It is not cheap to do properly ($350 ish),
Mine is almost fitted, I will let you know how it goes if you like.

Read everything you can about it.