Finally got around to fitting the upgrade kit from Devil's own water/alcohol injection. Ordered it directly from their website http://www.alcohol-injection.com

It's a set of fittings that add a second tiny nozzle pre-turbo to the existing system. Dual Nozzle upgrade DevilsOwn Injection

I had done the elephant hose mod (http://briskoda.net/technical-guides/diy-guide-elephant-hose-ccv-catch-can-mod/111546/

so I had the perfect inlet port already there.

The old connector was cut and I epoxied in the assembled DO1 nozzle and holder:

The rest of the install was just basic plumbing:

Results so far: turbo lag is markedly reduced, and there is a definite feeling of more power. And this all at ambient temps similar to the UK (18-24 deg C).

There are discussions on possible negative effects of the spray on the turbo impeller blades, but finely atomised water particles can't be any worse than crankcase oil vapour droplets in my fairly ignorant opinon.

I like.

Bas

That would be interesting, if I hadn't broken mine...:(

( I suppose I shouldn't have messed about with it, ho hum...)

Edited 1 February, 200917 yr by Mr Grumpy
cold fingers don't spell properly..

Looks like a good result the Bas

That would be interesting, if I hadn't broken mine...:(

( I suppose I shouldn't have messed about with it, ho hum...)

Now what have you done Graham?

Now what have you done Graham?

I twiddled the twiddly thing and broke it...:(

It now pumps as soon as the ignition is switched on....( not good, trust me..)

I have very little spare time,, no technical knowledge, and it's too bloody cold to start messing with it atm.

it runs fine without it anyway.. ( that's my excuse )

It's not very high on my list just yet, I will get it sorted as and when.

That is the only big issue with water injection - too low a flow is fine as long as the droplets are atomised. Too high a flow, and the **** can happen.

Great results though Thanks for the pics!

For best results, I read on a few sites that the pre turbo jet should be pointing directly at the compressor wheel, thats what I did anyway.

Agree, though feels much better with it, turbo pulls harder from lower down

ALex

I couldn't be bothered to remove the air intake pipe. Perfect little port there - the venturi effect will help suck all the atomised spray down.

Really kills whatever lag is there. Thinking of using a smaller main nozzle (DO4 instead of the DO5) and getting it to fire earlier....

I changed my D05 for a D03 yesterday, have yet to try it again. What pressure you got it coming in at?

Alex

I changed my D05 for a D03 yesterday, have yet to try it again. What pressure you got it coming in at?

Alex

The boost setting is very sensitive. IIRC I have it now coming on at 0.9 or 1 BAR indicated on the boost gauge, max flow at about 1.9-2 BAR...

That way I can drive "normally" (term used very loosely) and not have it come on at all. If driving "briskly" the progressive system kicks in nicely...

The DO5 (5GPH) nozzle is a bit big, have had the 40% alcohol mix make a "pop" at redline from the exhaust when driving 10/10, even before the DO1 nozzle (1GPH) pre-turbo was fitted.

As you well know mate, the nice thing about the progressive is that you can effectively make a bigger nozzle think it's smaller.

Adding in a pre-turbo changes things somewhat - you want the system to start firing earlier to help the turbo spool up faster still. So it seems that the smart thing is like what you've done - to go with a smaller main nozzle to conserve (?) meth/water.

I have a DO4 (4GPH) that came with the original kit and plan to swap it in and get the system to start up earlier. Should be fun testing it...

thanks for the info baz

time to "borrow" a y peice from work and order a do1

thanks for the info baz

time to "borrow" a y peice from work and order a do1

Good idea mate - you'll need to mount the one-way valve before the Y-piece though. Lot of custom fittings involved, may take some searching about....

Would be great to get the full guide on - perhaps just perhaps hehe

Right, a little tweaking and I'm even more pleased with the results:

Swapped out the DO5 (which had a rather worn-looking o-ring) and put in the DO4. Used some gasket-grade black silicone on its fitting and also to lock the air intake connector solidly.

Adjusted the extremely sensitive trigger to come on around 0.8BAR (12 o'clock position) and max flow around 1.5BAR (about 1 o'clock).

Results:

loud pedal up to 1/3 down: normal economy driving - pump doesn't run during regular driving.

2/3 down: turbo spools up with a jump - no smoke at all this time - rapid overtaking acceleration - feels better than before the tweak. Pump goes to max flow during this...

Haven't had a clear road to completely floor it yet - but expecting good things

I wonder if the DO5 was a tad too much for the setup tbh.

I just need to keep in mind things run at their best just before they go bang

Based on what (nearly) happened with Mr Grumpy's adventures with WI, deffo interested in the perfect setup hehehe

It does sound like the spool-up is reduced a lot

only need a 1/8th bsp female to female fitting deep enough to take the nozzel and im ready to order a do1

pitty the exchange rate is poor

Based on what (nearly) happened with Mr Grumpy's adventures with WI, deffo interested in the perfect setup hehehe

It does sound like the spool-up is reduced a lot

It is purely down to me fannying about with it, and being totally clueless:rofl:

I should know by now not to tinker with things I don't understand ( women come into that category as well )

Hi Basil,

did you adjust your map to get the best of the WI kit?

TIA,

What pressure does your pump generate? I've just bought a stage 2 kit with progressive controller with 250psi pump. I've installed the ~6gph nozzle just after the IC before the MAP sensor. Have you got any pump dutycycle regulator or the pump runs at 100% power all the time? I can reduce the pump rate from 0 to 75%, I wonder if I can run at full rate all the time, as from min. to max. the controller should adjust itself smoothly, and after exceeding max. should run at full duty.

The engine has 230bhp and 425NM torque.

no adjust to the map - just the regular stage 2 progressive kit with the 4gph post IC and the 1GPH pre-turbo.

Really notice the difference when I run out of fluid...

6gph is hell of a lot! I only have the 3gph nozzle and that chucks enough in for me on full throttle.

I've installed the system yesterday, I've set it to start at approx. 0,9b and max. to 1,5b, and of course a 100% efficiency The difference is really noticeable:cool: I need to verify this on the performance tester and adjust the kit optimally. I was about to check the car today on the 1/4 mile competition, with fluid and without today but the clutch pump died in the morning ;/ As soon as I'll fix it I will do dyno tests

What fluid do you use? I'm using isopropanol mixed 50/50 with water.

Edited 17 May, 200917 yr by spons

Was using surgical spirit, but it has some oils and other junk in it. Then lab quality Ethanol. Now isopropyl alcohol just like you.

Ideally should be industrial grade methanol, trying to source some. I've been told no more than 50% alcohol for a derv.

I've heard that methanol 'eats' aluminium, don't know how much true it is.

For how long are you using the kit? Have you spotted any bad influence/damage to the engine?

I've heard that methanol 'eats' aluminium, don't know how much true it is.

For how long are you using the kit? Have you spotted any bad influence/damage to the engine?

This was covered on the devil's own forum. Not supposed to be a problem. Don't forget it's an extremely fine mist that gets vapourized and burnt PDQ.

need to rattle the cage of the guys supposed to be sourcing Industrial Methanol for me

The pharmacy isopropyl is too expensive to keep buying, and I'm getting funny looks from the pharmacist