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]

water injection sprays the water inside of on engine to lower the cyinder temps as well as raise the octain level of your fuel. this lets you run more boost, and more timing advance and provides great knock protection. its totally safe to use.

Well, this is a bit of an overstatement.

The risk with running water injection is that people can tune for it, run crappier gas, or push their cars past safe limits. Then, if the system malfunctions for some reason, knock will occur and could lead to detonation.

Also, don't forget that pushing your car harder even when the system is working properly will tend to cause greater wear and shorten the life of your engine - its just the nature of high performance cars.

These concerns would not persuade me to shy away from water injection. In fact, I think its use is a great idea (even better in an MR2 with crappy intercooling) - particularly on the stock ECU. However, to state that its "totally safe to use" is probably a bit misleading.

yes, your totally right. what i meant was that it was totally safe to inject washer fluid into your motor and that it will make your motor safer by offering cooler cylinder temps. how far you push the setup after that, is all up to you.

Art, you never cease to amaze me. I love how much you care about your engine, it has rubbed off on me and makes me want to protect it more than push it

thanks dog!