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Old 14-09-2016, 09:08 PM
Steve_tt Steve_tt is offline
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Default WM injection AND WM intercooler spray?

I'm considering a HFS3 for my 997.1 Turbo. I understand the benefits to be pretty good with WM injection (and tune), but is there a good incremental benefit to be gained from spraying onto the intercoolers too? Or is it marginal and just helps deplete the WM tank. Note, the ambient temps in Canada are not too bad. For system, I was thinking something like 2 x 1.0mm injection and 2 x 0.4mm spray through a 4 way manifold. Anyone try something like this?

Cheers

Steve
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Old 20-09-2016, 04:52 PM
rotrex rotrex is offline
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Default Re: WM injection AND WM intercooler spray?

I'd rather only spray into the engine. Just spray more if you need to extract more power with more boost.
By the time the effects of the external sprays turns relevant, you're off the throttle again anyhow. Best way would be to try it.
The extra effort is minimal once the system is installed.
Can you remap your ECU? Without that, you cannot inject much into the engine anyhow before power drops.
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Old 21-09-2016, 05:57 AM
sambeeb sambeeb is offline
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Default Re: WM injection AND WM intercooler spray?

An intercooler spray has worked brilliantly for me but I had some pretty specific dramas I needed to overcome. My intercooler is a tiny 20 by 30cm oem side mount. It would heatsoak after only 1 or 2 power runs and then inlet temps would hit 80 degrees. The water spray triggers at 1 bar (1.4psi max boost) so you really have to be up it for it to activte which minimises water loss. It takes time for the cooling of the IC to take effect though. If you start with a heatsoaked IC it'll take 30-1min before you'll see any effect on your temps. For sustained running though it will reduce your inlet temps - I had a thermos couple installed into the hot side of my core and the core temps got to 4 degrees below ambient after a good 5 minute flogging which is pretty good. Even for point and squirt style driving it is very good at getting IC temps back down after each full boost event.
Where it really helps is on the start line. I do hillclimbs and the queue time would mean that the IC would be heatsoaked nefore I even started. Now (using a manual momentary switch in the cabin) I can give the IC a squirt or two of water every now and then as I approach the start line and its cool as a cucumber and ready to go.
Incidentally if you really want to make a water spray effective, add a fan to your IC. Whether I'm in traffic, start lines or hammering the car the fan in conjunction with the water spray is unbeatable.
My car has water injection, water spray and the IC fan and now my inlet temps don't top 40 degrees really. I think the changes you see if you already have a quality air to air will be less though, but if your IC is under rated like mine was then it can really help.
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Old 10-10-2016, 01:49 PM
RICE RACING RICE RACING is offline
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Default Re: WM injection AND WM intercooler spray?

Quote:
Originally Posted by Steve_tt View Post
I'm considering a HFS3 for my 997.1 Turbo. I understand the benefits to be pretty good with WM injection (and tune), but is there a good incremental benefit to be gained from spraying onto the intercoolers too? Or is it marginal and just helps deplete the WM tank. Note, the ambient temps in Canada are not too bad. For system, I was thinking something like 2 x 1.0mm injection and 2 x 0.4mm spray through a 4 way manifold. Anyone try something like this?

Cheers

Steve
Steve,

I have done WM50 into engine + onto the charge cooler core, it works very well.
Set the CC jet/s to come on at required points and good as gold.

On that set up registered eff of over 95%, minimal increase in fluid usage.

If you have a 997 Turbo get a Syvecs ECU and control it all through that, I just came back today from doing a couple of cars (Lotus and Lambo) with those ECU's and they can control anything you need to make it work and all tied in with Knock/Lambda control that actually works

The ideal is to have a fully integrated strategy all managed by the ECU, Life Racing or Syvecs in your cars case and water injection is ideal set up, simple reliable, most powerful and safest of all.
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  #5  
Old 11-10-2016, 04:52 AM
sambeeb sambeeb is offline
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Default Re: WM injection AND WM intercooler spray?

I'm glad to see you're still on here Riceracing. I'm in Australia and need to have a chat re: one of your boost pressurised air atomising nozzles. I've pm'd you but figure your inbox is probably full.
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