OH NOOO: I put Washer Fuild into my motor...., ... and it made it go faster! Options

[lagos]

over the past few months, ive been trying to street tune my car to get the most of out my setup. i noticed that i could run 13psi just fine, and sometimes even 14 or 15, but sooner or later i noticed that i would see knock response on my tvsv leds. after trying a lot of things to resolve the problem, i came to realize that the jdm ecu just runs too much timing advance for our pump gas. youll hear mr2oc guys always say how they keep their boost at 15psi, with no problems, but then you look at their dyno sheets and they are only making 200whp at that boost level. so, if the turbo is good for it, and we have the fuel to support it, then the problem must be timing.

so decided to fix the problem by buying water injection. i got the Devils Own water injection kit. i have it running pure washer fluid, 3gpl nozzle, and injection starts at 10psi. it made a huge difference! i can now run 16psi, with no knock and the car pulls like crazy. ive yet to try any more boost then that ( and i probably wont), but im confident that it would do 18psi with no knock, if i really wanted to push it. youll hear people say the ct26 falls on its face after 15psi.... but all of that changes with water injection. your intake charge is cooled down in a major way, and it makes a world of difference, especially on our jdm ecu's that are tuned for higher octain gas.

here are some pics. i installed it in my trunk, because i had almost no room in the engine bay. sorry for the wiring mess, i was going to clean it up before posting pics, but its just to damn cold out right now.







This post has been edited by lagos: Jan 11, 2007 - 11:30 PM

[lagos]

wow, this is pretty neat... so im assuming you can also wire the pump in with the boost controller or something to engage when you hit a certain boost level huh? bad ass, also, would this be of any use for a na motor? or primarily for fi because of detonation and all

see the brass switch in the last pic? thats a simple pressure switch that you hook up to a vac line. then you turn the dial on it to set it to what boost level you want it to start spraying at. this way, it only starts to spray under hugh boost and high load conditions. i have mine set to start at around 10psi.

water injection is really meant for turbo or supercharged cars. on an NA car, it wouldnt really benefit it much unless the motor was very build up, high compressor, lots of timing advance...etc..etc... you would also need to find some type of WOT switch to activate it, because the boost pressure switch would do nothing on an NA motor...... in other words.... for your normal 7afe, 5sfe, it will pretty much have no benefits.