All - on the average stock Z, approx 3 more PSI on pump gas which is about 30rwhp can be had with Water Injection. As you can see by reviewing the A/F ratio graphs, with the usage of a methanol mix 25% or more, one can actually produce more rwhp safer !!!red line = 1.4 bar pump gas ~ 94 octane ( no detonation ) blue line = 1.65 bar pump gas w/ WI ~ 94 octane ( no detonation ) 
If you live in very hot climates or have lower than 93 octane at the pump, IMHO - WI is a "no brainer" for extra buffer ( same boost levels ) or more / higher PSI at the same or safer A/F ratio levels Z32 Stage 1 Base Kit : 
Includes : • 150+ PSI High Volume Pump • 3 Quart Reservoir • 2 Nozzles To Cover a Wide Range of Horsepower • Required Hardware Needed For Installation • Comprehensive Instructions • Dual Nozzle upgrade $280 shipped ! Z32 Stage 2 Base Kit II ( for custom dyno tuning ) : 
Includes: • 150+ PSI High Volume Pump • 3 Quart Reservoir • 2 Nozzles To Cover a Wide Range of Horsepower • All Required Hardware Needed For Installation • Comprehensive Instructions • Dual Nozzle upgrade ******** • Digital Variable Controller ( allows flow injection to gradually increase linearly as the boost increases ) ******** $415 shipped additional accessories depending on mounting location and safety preferences ( can be added on later if desired ):
Safe injection 
**** temp on back order - inquire for availability **** ball park price ~ $140 / TBD 220 psi pump upgrade ** recommended for rear mounting and 600rwhp + applications ** 
$39.95 ( when upgrading from 150psi pump ) Solenoid upgrade 
Shut off solenoid is used when mounting the injection nozzle lower than the reservoir or the reservoir is rear-mounted to prevent gravity flowing. It is also used to prevent siphoning when the injection nozzle is mounted after the throttle body or carburetor and is exposed to vacuum. $49.95 Low Level Indicator ( unmounted ) 
$39.95 Boost Juice * recommended for hot climate areas * 
Boost Juice™ is Snow Performance’s proprietary mix of 49% methanol and 51% water. It is made in a controlled environment with special care to make sure the ratios are accurate to result in a high performance water-methanol fluid formulated for use in the Boost Cooler™ injection system. $29.95 for 4 gallon case email = paypal and accept all major credit card
*** please detail turbo size for accurate nozzle size recommendation ****
Snow Performance Sales Pitch : " 1) Engineering - each system has been designed and tested by engineers to ensure reliability and robustness. The Boost Cooler will do what it is designed to do for a very long time 2) Digital Variable Controllers for different applications - Not just boost actuated, we have specially designed controllers for each vehicle / application to ensure maximum power 3) High Pressure/ High Volume Pumps - Our pumps are specially designed for Snow Performance to deliver higher pressures and reliability. Each pump is pre-tested and designed to work with methanol. 4) Unsurpassed Atomization - Along with higher pressures, our nozzles are specially designed to spin the fluid supersonically before being forced through a venturi shaped oriface for the ultimate in atomization. 5) Trained technical and tuning advice - trained, knowledgeable technicians are always available to help. 6) Warranty - Life time warranty available. Snow backs it's systems with industry leading warranties. 7) Customer Service - Expert technical advice is available anytime during business hours. We have the experience to answer installation and tuning questions. 8) Safety - Our new safe injection is the ultimate in safety for even the most aggressively tuned applications. This ensures worry-free power in even the most demanding racing applications as well as full power on the street. With the proper tuning, expect about 10-20% improvement in power. Can be used in Nitros applications. Can be used in MAP and MAF applications. The Safe Injection Module can be used to trigger a warning lamp, bleed off boost pressure ( electronic boost controller or manual boost controller),or switch EMS maps."
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