Anyone have experience with it here?

I am mainly looking to ensure EGTs at high boost with plenty of propane going in don't end up going too crazy, protecting the engine / turbo

Looking at Aquamist System 2c with a DDS3-v8 type setup

Would prefer a separate feed so I can run at higher alcohol / water percentages

Bryan D is probably your best bet, I know he manufactured his own for his SMIC with pics and a guide, i'm sure this could be adapted for your requirements matey.

Dumping in a search now

Post(s) have appeared to of disappeared

PM Bryan, i'm sure he'll be of some help.

Off the top of my head I looked into a similar kit manufacturered by Aquamist, but never got it because Bryan said the temps only went down by about 6-10 degrees IIRC, which is about the same as removing the OSF fog light all together, obviously the benefits may increase given the fact you have a FMIC, but IMO it'd be even cooler if you did a bit of bumper cutting a.k.a STAR Performance's Fabia(s) and got a new grille with number plate on the NSF.

Hmm that would be spraying the IC with water, which is not what I want to do

I've got the Forge FMIC already, I'm after EGT reducing stuff, and reducing the max cylinder temperatures a little when maxing out the engine.

You can do that by misting in water droplets into the system, after the FMIC in my case, apparently

Not seen it done on a diesel before, but I know *** Auto Designs supply and fit Aquamist to a lot of their Big Turbo cars. Might be worth a ring?

who josh? the filter blocked their name out.

i've been looking into it for a while but have heard some very mixed feelings about it so far.

J B S I reckon if I had to guess

It is important to realise that water injection is NOT the same as spraying your IC with water, it is a totally different application and effect.

Also the impact on petrol is more proven, Subaru uses the system for sure.

Some things to be cautious about:

You HAVE to have a mist of water, you sure don't want big drops or anything like that, and you don't want too much water as that can cause 'bad things' to happen.

aquamist.info has some stuff on this in their forum, I'm gonna have to call around a fair bit in the new year I reckon

About J.B.S - Just noticed this myself, seems very odd. Although I will pass judgement as I don't know what has happened behind the scenes.

@ VW_VRS - Sorry mate, got the wrong end of the stick. What you are proposing sounds interesting, are you sure it will all be safe, what with Propane, Diesel and Water all in the mix, I could be talking b*ll*cks here so apologies if that is the case...

Hehe not to worry

Yeah it should be safe, could add NOS as well but that would probably kill the engine even quicker

A few Mx5 with FI are using water injection on MX-5 Nutz. It works well on the petrol engines but it is more to do with lowering the intake temps to avoid detonation. I dont think anyone on there has checked to see what effect it has on the EGT'S. There is only one way to find out :-)

Cannot see any reason why it cannot be used on a diesel engine as the spray is a very fine mist so in theory it should be like driving through a very thick cold fog. Adding methanol to the water mix helps a lot too

sounds interesting anyway keep us all posted

I censored JBS myself

Anyway, their BT Octavia runs Aquamist and I *think* Bill's Ibiza does too, but don't quote me.

Reduces detonation a lot on petrol cars.

It sure does, and with Subaru using it off-factory it is not an urban myth - That said in a derv it may not be the best thing as you try to get the biggest 'bang' and for that you need heat. Annoyingly the heat is also the limiting factor as your head gasket/head/turbo doesn't cope.

it was the basic Aquamist kit i was looking at myself.

The 1s ? Yeah that is not bad either, it does depend a little on whether you want a fail safe, if you do you'd want the DDS2/3 I'd have said, or at least some kinda low water level indicator (that said you've got the normal one anyway)

i would be using the normal water bottle anyway as i have the 5.5 litre one on my car

Same here, although I keep wondering about water usage as I've got the washers (Xenons) as well.

That said, apparently it will still last for quite a long time

erm diesels engines run no where near has hot as equiv power petrols. I can't see misting helping in a diesel as your running high temp compression to produce power, unlike a petrol based engine

True - however now add Propane to this equation and it may just start to make sense again. Agreed though that without the propane it doesn't make a lot of sense on a derv

Currently I am thinking propane injection at max boost causes EGTs to scream upward. Annoyingly I haven't got the EGT sensor/gauge fitted yet, it will take at least another week before that arrives at the office, then I've got to fit it :(

ah but what is the propane for ? Is it to burn of the excess fuel thus reducing the smoke output, or are you using it to boost cylinder compression ?

Burn excess fuel is my main goal, it also burns on its own to some extent but if you get too much flow of gas it can have the same effects as a knocking petrol engine, i.e. bad, bad shock waves through head damaging exhaust valve(s).

Do you inject your gas in before the turbo or after the I/C?

Pre-turbo it gets mixed in, this is why I'm also looking into replacing all OEM hoses & couplings with Forge stuff that definitely won't leak at high boost (just in case)

If I were to go for an aquamist - type system, it would be post FMIC

I can't see how an aquamist would be a performance gain.... if anything it's going to decrease performance on a diesel.... EGT won't increase that much with propane injection. All the propane does is provide extra oxygen to burn of any excess fuel. The aquamist would only reduce the temps at compression, which means lower compression, which means less power.

Actually propane does not add any oxygen?!

It just causes the fuel stuck against the cylinder wall to burn up, and as it is a fuel itself it will burn up itself