My parts finally came in (from several places actually) for my water injection system. I must say living in Canada sucks when you order online in the USA at a place which only ships via USPS. My shit was shipped out almost a month and a half ago I finally received them two days ago
Anyway, hardware list is simple:
- CoolingMist (Shurflo) 60PSI Water Pump
- McMaster-Carr Water Solenoid
- McMaster-Carr Misting Nozzles
- McMaster-Carr 3/4" Pressure Gauge
- McMaster-Carr Needle Valve (Used as regulator)
- Electrical Parts such as Relays, Wiring, etc...
- 1/4" Tubing and Clamps
- Brass Fittings, etc...
- Solenoid and Pump Controlled by AEM EMS
The entire system was about $180. The system would cost a bit more if you rely on a boost pressure switch. I am just using my standalone to control the pump and solenoid.
Basic facts on Water Injection:
- Provides additional cooling during combustion
- Lowers EGT
- Allow a safer yet leaner air/fuel ratio
- Stretches the limit of pump gas
- Helps reduce carbon build-ups by steam cleaning
- Allows a larger margin of safety for tuning
I wouldn't bother with water injection unless you are reaching the limits of pump gas. With my turbo setup, I was pushing more than 160 HP/L and that's close to the limit of pump gas from what I've seen with over 10:1 CR. It was after my dyno session that I realized water injection would be a nice upgrade. I've also used water injection on my other car and it proved itself worthy.
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Pic of the Water pump mounted:

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Pics of pressure regulator, gauge, solenoid and water nozzle at charge pipe:

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Dyno Session:
To add onto this thread, my recent trip to the dyno netted some okay results... This is what I have written on my homepage. I am posting the same info on here because Geoshitties have very limited bandwidth.
Link:
http://www.geocities.com/leunghomepa...oOct13-05.html
Baseline Dyno Run:
The turbo Camry was once again strapped on the dyno. With a street tuned 14 PSI on the T66, it layed down an average of 320 WHP and 315 ft-lbs. Air/fuel ratio was in the high 10's which was leaned out later in the dyno session.
Final Dyno Numbers -- DYNORUN .013
After increasing the boost to 16 PSI and tuning with the AEM, the Camry puts down 391.7 WHP and 374.6 ft-lbs.
There were no ignition problems or timing problems, no heat or cooling problems. There was however, a little boost creep after 6500RPM and boost climbed up to 17 PSI. It was decided though that the car should rest after 13 dyno pulls and that was the day.
What's Next
With the automatic transmission and unlocked torque converter, there was a sigificant amount of driveline loss. Usually there is about 20-22% driveline loss, and this equates to roughly 480-490 flywheel HP. It is time to take caution when the engine is producing 160+ HP/L with 10.5:1 static compression ratio and running on pump gas. A water injection system will be installed shortly.

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Here's the dyno printout:

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Tuning Notes:
- Timing at torque peak @ 18 deg BTDC
- Timing at 6500RPM @ 24 deg BTDC
- Maximum Injector Duty @ 57%
- Air/Fuel Ratio @ 11.8:1 at peak boost
- 7 Heat Range NGK IX Iridium Plugs
Additional Notes:
With the high stall torque converter, the engine does not create actual power unless the RPM is at or above stall. The power curve on the dyno sheet does not reflect actual turbo spool time and powerband. In order to find the turbo spool RPM and powerband, the torque converter has to be fully locked.
I am assembling a video right now... It should be ready for download later this week

And of course, I won't be happy until I touch 500WHP... The water injection will give me some confidence to further up the boost to 20+ PSI. I might try to put some race gas in the mix if I reach the limits of pump gas + water injection.
Comments are welcomed