Water Injection.....
Turbo Mini Forums

Yes, if I had one. It would be switched on rev's rather than boost.

I'll be doing it with my ECU based on MAP.

Mines on at 5psi... seems pikey but works.

I run a supercharger and I don't care the TB is on the wrong side.
VEMS + 12 PSI + Liquid Intercooler = Small Bore FUN!

You can start using it at very low boost, but unless it's a progressive system you will probably have to compromise the benefit at high boost to flow little enough at low boost not to cause a misfire. Although mine isn't set up yet on the mini, the system on the Maestro (not progressive) doesn't kick in until 20psi, where it starts to need it to allow the ignition timing that it is set at. The mini will probably be very similar in setup, maybe coming in a bit sooner but it's hard to tell at this stage. Progressive systems are great, but are a pig to set up properly and not much real benefit in the real world. Unless you can lap a track consistently enough to notice tiny changes as it comes on boost out of corners etc, you will never notice the difference.

my car only runs to 10psi

I run a supercharger and I don't care the TB is on the wrong side.
VEMS + 12 PSI + Liquid Intercooler = Small Bore FUN!

Should work a treat then! :)

im going to have a bash at adapting my ecu to make the water injection fully mappable like fuel injection
i doubt fuel injectors will like water/alcohol mix so ive got a couple tricks up my sleeve, if it works how i want, great if not.... well il make it work :)

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If your using water injection to lower intake temps would it not be best to trigger on IAT/MAT? Turn on at 50 degrees and hysteresis of 10 so only turns off when temps drop back below 40?

If your "cruising" at speed (not on boost necessarily) without a IC how high do the temps get?

You use it to lower intake and combustion temps and allow a combination of more boost and timing to make more power. It's (almost) pointless reducing temps if you don't tune to take advantage of it

Stick it in pre turbo Brett. More boost for nearly free.

both

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No point. You can't make air already at ambient temp any colder or more dense by adding water at the same temp.

ah, but you can boost the compressor efficiency by sticking it in pre turbo,

you can also fuck the compressor wheel though...

I've just been reading up on it. Best results are about 4% mass air flow increase using water/methanol mix. With water alone it I'd guess at nearer 2%. I suppose the disadvantage is that you can inject less after the turbo/ic as the saturation limit is fixed. The more you use pre turbo to gain mass flow the less you can use later where it would prove most beneficial for reducing heat. Swings and roundabouts.. not sure it's worth the wear on the turbo..

It would be interesting to see some dyno results for it. I doubt anyone could tell the difference driving it.

increasing the power fucks everything faster lol

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not on mine...everything fucks quickly whatever...

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

http://www.alcohol-injection.com/en/49-nozzles

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noticed no damage on my turbo when squirting pre-turbo :) .. now run post turbo for other reasons but it was fine.

turbo 16v k-series 11.9@118.9 :)

Denis O'Brien.

i did put "CAN" lol.

ive had a good look round the internet and it seems that as long as you have a mist you should be ok, plus it seems the problem is more likly on big turbo's (like gt35-45's), I guess because the blades are longer, also one I read about doing it was chucking a load of air/ water mix back through the compressor when the throttle shut where it was surging, the video of that was quit interesting!

i dont see it as much of a problem, but then i have no hard evidence or experience of either way only from the net, think about suck through turbo set-ups where does the fuel go ?? ok there not that common but still there is more fuel going through them than water in a WI set up
another thread for you
http://www.supraforums.com/forum/showthrea...ction-pre-turbo

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