So who's got Water Injection?

not me personally.. but my old man used to have it on his GT-Four (2.0 turbo engine)

the difference between when it was turned on and when it was turned off is pretty obvious really.. the engine just runs and pulled much, much smoother throughout the rev range with it turned on.

i couldn't say whether it helped fuel consumption or power because i didnt drive the thing or put the fuel in. :P
 
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a friend used water methanol on his RX7 (which wasnt standard, but i do not know what he had in it). Did it more for fun i think, as i could supply him with the methanol.
 
I'm looking at doing this on the scoob.

My mapper tells me that it was make a significant difference in power when mapped in.

This and also having the benefits of cooler running during the summer months.
 
ScoobyDoo69 said:
I'm looking at doing this on the scoob.

My mapper tells me that it was make a significant difference in power when mapped in.

This and also having the benefits of cooler running during the summer months.
Click to expand...

See this is the kinda thing I am concerned about.

If you have it mapped in - That means your engine kinda will depend on it...

...and my concern is what would happen if something in the WI system fails? or the water runs out etc..?
 
Its good in theory so long as its correctly set up and has failsafes in place. Ie if it fails it will back off the boost and/or timing to prevent undue det
 
Depends on the kit in question, you can build a cheap water injection kit yourself and control it through something like an EMU, long as you have a knock control and / or a low level sensor on the fluid supply plus switchable maps its all good, had a mess with it on the mazda for a while.

I simply controlled mine on the MAP but i supppose you could also do it on throttle angle.
 
So are you saying when you reached a certain value it started spraying then?

I intend to have a switchable map, and have the switch send power to the water/meth injection at the same time. Quite looking forward to getting it on, along with the various other things!
 
Virdi said:
See this is the kinda thing I am concerned about.

If you have it mapped in - That means your engine kinda will depend on it...

...and my concern is what would happen if something in the WI system fails? or the water runs out etc..?
Click to expand...

Similar thing to if your turbo pipe bursts, or if your lambda probe fails. Nothing catastrophic.
 
Urm no not true. If a turbo pipe bursts, the engine won't det like holy hell.

If you run out of water or whatever, and you're car is soley mapped on it, it will det like a mofo.
 
I'm 99% sure I'll be going WI soon.

I read about a nice set up which utilised a Manual boost controller and an EBC.

EBC set to 10psi (for arguments sake)
MBC set to 13psi

When Switch for WI is on it disables the electronic boost control solenoid so goes to the MBC which is set to 13psi. When it's switched off, it switches the EBC on and runs 10psi.

Happy days.
 
For those that run W.I, where are they sorucing their methanol from? I know some guys in the states run window washer fluid, but I'm not sure about over here?
 
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ScoobyDoo69 said:
I'm looking at doing this on the scoob.

My mapper tells me that it was make a significant difference in power when mapped in.

This and also having the benefits of cooler running during the summer months.
Click to expand...



I suggested it to my mapper and his opinion was it was great when it was working, but if the mix ran out unexpectedly then it would do a lot of damage to the engine in the time it took for the ECU to adjust. He wasn't in favour - and given it would be him fitting the thing I took his advice.

Yes, it gets you extra power, but at a cost.


M
 
mk1_salami said:
For those that run W.I, where are they sorucing their methanol from? I know some guys in the states run window washer fluid, but I'm not sure about over here?
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I have a bottle of cheapo 'antifreeze' which is a water/methanol mix in unknown ratio.
I'm sure you can still buy this evil stuff, it's not much use as antifreeze.
 
mk1_salami said:
I'm 99% sure I'll be going WI soon.

I read about a nice set up which utilised a Manual boost controller and an EBC.

EBC set to 10psi (for arguments sake)
MBC set to 13psi

When Switch for WI is on it disables the electronic boost control solenoid so goes to the MBC which is set to 13psi. When it's switched off, it switches the EBC on and runs 10psi.

Happy days.
Click to expand...

Thats a good idea there, I hadn't thought about that. Nice and simple that one and acts as a nice safe guard if you run out. Plus when you want the extra performance you can have it, so you don't always need water/meth in your car.


ScoobyDoo69,

Surely just use a fuel tank style sender in the water tank to a dial. Then you can have a water level guage somewhere in the car. Or you can do a more basic version where a light comes on when it reaches a certain level.
 
Great when it's working but a bad idea to map the car with it.
Use it solely for "helping out" an already well tuned motor.
It's not running out of fluid that's usually the issue it's the jets blocking up.
 
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