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]

great quotes from one of the links

"16. Should I upgrade my intercooler or get a water injection system first?
They do different jobs, intercooler makes the air denser and thus giving more power. Unfortunately more power means higher combustion temperature and pressure, so water injection is becoming a more important addition to prevent the onset on detonation due to peak pressures and peak combustion temperatures.

The natural progression would be to retaining your stock intercooler and add water injection to supplement the existing cooling capacity of the stock system, charge temperature in particular.

When you decided to go all out for big power, the entire system would have to be upgraded, not just intercooler, turbo, up and down pipes etc. Water injection should definately be included on your list of upgrade components.



17. So I need to buy both (WIS/intercooler) at the same time?
Ideally, yes. Given that water injection can cool the inlet temperature as well as suppressing detonation, so water injection should be your prime consideration, as an intercooler cannot perform in-cylinder cooling.



18. I want to increase my boost pressure to maximise the full flow range of the original fuel injectors, would I then need water injection?

Definitely yes, by stretching the fuel supply capacity to its limit, the Engine management would have lost its ability to dump fuel to assist the cooling of the combustion chamber, the running temperature will increase and soon bring about the onset of detonation and eventually lead to engine failure.

8. Can I use windshield washer fluid?
Although most contain some glycol and detergent, most windshield washer fluids are up to 50% alcohol (methanol, ethanol, isopropanol) and make an excellent Boost Cooler®. Try to find one that indicates "contains methanol".


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This post has been edited by lagos: Jan 12, 2007 - 2:13 AM