Devils own basic water injection system
 

I have used this system for less that 100 miles but i am going to a whole new set up with a BEGi kit and i don't want to drill a hole in that kit's piping so this has to go. 150 shipped with the water jug i used in the trunk of the car. only comes with the 3gallon nozzle which is what anyone with a miata will be using anyway.

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Um.
Drill a hole in the siliicone coupler instead. Those are super super cheap to replace.

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Mike :)