Hi guys, just wondering if anyone could provide any opinions on the above kit. I'm hoping the system could keep the engine running cooler when driving in high temperatures in Europe during the summer and (more obviously) offer performance advantages.

I've already come to the conclusion that the washer bottle wont be suitable for the install so I'm thinking of putting in a higher capacity tank in place of one of the large removable polystyrene 'containers' next to the spare wheel under the boot floor. The pump could also be placed here to avoid any issues of thermal cut out (ie away from the heat of the engine in a relatively tight engine bay).

Can anyone offer any advice on the systems and how to get the best from them and simply, whether they are worth implementing in your opinion?

Water injection is intended to supress detonation and therefore allow more aggressive timing and boost than you could normally run. It's not a cure for a hot running engine.

But keeping any det under control would surely allow the engine to run cooler, no?

But keeping any det under control would surely allow the engine to run cooler, no?

Your engine already keeps detonation under control with knock sensors. Water injection has a place, I will never use it though. If you are concerned about cooling, then you need to address cooling. Do you currently have a heating problem?

No but the engine bay of the Yeti seems very tight and I know that when you order the tow prep from the factory - they uprate the cooling fans - to be that says their is the potential for problems. I cant upgrade the ic any further and theres no room for aftermarket fans. Pace have drawn a blank on it. OIl cooler is one idea but I thought water injection may be more beneficial. I guess im trying to think ahead and work on prevention rather than cure but Im probably just worrying over nothing. The only time im worried is in the summer - when I head into Europe and the ambient temperatures are usually around 42 degrees. That combined with the fact we will be fully loaded this year just made me think I should do something further in the 'cooling' department.

Very good for temp control and can be used just for that !!!

You can also use for more power but you don't have to !!

Aem kit is very good with safe guards in place to stop any issues etc etc

Very good for temp control and can be used just for that !!!

You can also use for more power but you don't have to !!

Aem kit is very good with safe guards in place to stop any issues etc etc

Thanks, so you would run the above system to keep things running cooler?

Water injection only activates at elevated engine loads. Otherwise you will quickly run out of water. 42C will not be a problem for your car, unless you are planning some Motorsport? If it is just normal road driving, don't worry - your car is tested for that. The tow pack is needed because of much greater engine loads at LOW speed - where there is no air flow through the rad. You don't have this problem.

Rick

You can get a warm climate thermostat from the skoda dealer for most models, it opens at a lower temperature to the normal one, they normally fit them to vehicles sold in really hot places like the middle east as factory spec item but you can order the different thermostats from the parts desk.

You'll have no problem in hot climates with the standard setup. I have taken my totally standard now sold Octavia TDi and also sold Superb MK2 through to southern spain, and the seville area. Even with temperatures in the mid 40s C the Superb temperature gauge never went over 90c, and that included driving all day at 75mph in that heat. Last year in the Audi, whilst queuing in 42c heat to drive onto Gibraltar the temperature gauge hit 110c but that is still well within the operating specification and I was in the queue for the best part of 1 hour.

Your car is designed to operate in environments much hotter than you can imagine, so a trip to the hotter parts of europe will be perfectly fine.

His car is not exactly standard though...

Do a search on alfaowner.com

There's a guy (jb) with a brera jtd 2.4 running silly power levels with it.

Needs very careful setting up. Alternative cheaper and less potential to go wrong is intercooler watersprays - effectively increases intercooler efficiency by about 25%!

I run a snow performace stage 2 W/M boost based kit, it keeps my intake temp 5 degrees lower than ambient temp in the hot Israeli summer and I can run a 104 ron tune with 98 fuel which is great!

I also ran a Labonte Motorsport stage 4 kit which was amazing and is similar to the HFS4 with regards to functionality but it wasn't very reliable and when it broke down and they closed shop I had get a new kit from someone else...

I also run an S3 FMIC and a forge twincooler so can't commit on same results with just W/M but if cooling is what you are after than running it with just water will do the trick and topping it up will cost a lot less.

Any kit from a well known company will be fine, I personally don't like the AEM kit because it looks like a peace of cheep plastic but got a few friends running it with no issues.

Aquamist are great, they are one of the leading companies when it comes to water injection kits, however, IMHO the HFS4 is overkill for what you are after and all my buddies that run it complain that it's too much of a headache to install and setup.

Suggest you get a simple stage 2 boost based kit, it will be easy to install and setup and bottom line will give similar results.

Good luck.

Edited 31 March, 201313 yr by Petelking

i have a now old aquamist 2d setup on my Volvo 850. good kit but pricey. the company is very good at looking after you though. and sometimes if your lucky like me you get to ask tech stuff from the owner over the phone.

if nothing else it should allow you to run 95 ron as if were 98 ron, and it should lower the exhaust gas temps, so helping your turbo to stay cool.

one word of caution though. if you have any metal inserts in your plastic intake pipes itll rust them.