I haven't asked a technical question regarding the 420a in years, figure it's time to stoke the coals a bit. If this project becomes successful, expect a wiki with parts list all for <$100.

I'm designing a water injection system based off of tidbits I gathered from autospeed.com. The golden piece of information off of that site was a suggested pump that works like an aquamist pump at a fraction of the price (~$50-60). I'm going to use the stock windshield wiper tank, and set my emanage to turn on a relay for the pump when boost begins. The nozzle will be placed after the intercooler, some distance away from the TB.

Goal is to run water only for detonation control. No methanol. I won't need any alcohol in the mix as the car will be in cali and freezing temps are not a worry. I want to maximize boost available on a s16g with 91 octane, intercooled, 8.8 pistons, stock ignition. Without water injection, some have reported seeing pinging at 15 psi on this setup. I want to get a few more psi if possible.

I'm looking at the following nozzles off mcmaster: 3178K87, or perhaps 4759T15. The fogging nozzle appears to atomize the water the most, based on the description. See http://www.mcmaster.com/#catalog/117/2072/=aunli4 . Any suggestions here?

If you run water injection can you chime in on your experiences with details of your setup? Like what is the volume of your water expressed as a %age of your fuel volume? Maybe an old schooler versed in water injection will see this thread (turby, are you reading this)?

Once you've implemented water injection, what do you lean your AFRs out to now, since the water is putting a clamp on combustion temps instead of the extra fuel?

Also, can anyone recommend a small/light weight 12V to 220V inverter that will survive underhood temps?

2gnt: '99 RS-T, killed by a toyota, pending rebuild...
Daily: Volt
Daily #2: '99 EVG ebike- STOLEN by PEDRO