Adding jets to reduce IAT temperature?

[boukman]

Hi,

I have Aquamist HFS-3 on my Subaru Impreza EJ207 STI and it works pretty well:

- 2 x 0.7mm pre throttle body (50/50 water/meth)
- FMIC
- GTX3076r @ 20 psi
- ID1000 (~60% IDC)

It's very hot (Weather: 85?F)

I would like to reduce my intake air temperature (actually ~115?F on my IAT sensor that is just before the water jets)

What would be the best solution?

Adding pre compressor nozzle? adding post compressor or something else?

Regards.

[Richard L]

You really need to move the pre throttle jets to the exit of the intercooler. This allows more time for evaporation and reduce charge temperature before arriving the Throttle.

[boukman]

It won't affect detonation protection if I move them at the exit of the intercooler?

Regards.

[Richard L]

it will improve it. You can a more balance cylinder distribution, less likely to starve one cylinder and over-fill the others.

[boukman]

Thank you very much.

I gonna move the jets at the exit of the intercooler.

Can I safely add a little 0.4mm pre compressor too?

Regards.

[Richard L]

We have a few end user using this option but rarely receive a feedback.

I would try the new location jet first.

[parmas]

Originally Posted by boukman

Thank you very much.

I gonna move the jets at the exit of the intercooler.

Can I safely add a little 0.4mm pre compressor too?

Regards.

When in the past had the front mount intercooler setup, putting the jet just at the exit of the intercooler would be too far. Also the mist needed to climb a 2" pipe height of car -> 90 degree elbow -> throttle body -> intake plenum.


Every setup is different but if you have a picture of your setup we could help you better according piping length and size....

Also 85F or 29DegC is hot but not VERY hot. Here in Malta we see 35C+ in summer and I run no intercooler / only water injection.
Temps are 40DegC / 104F during slow running and sometimes 55DegC/131F when long idle. On boost and water injection I see 30degC / 86F

Also I would position the IAT in the plenum or into throttle body or the nearest possible

[boukman]

Hi,

This is a picture of my setup.



You can see my two jets and IAT sensor position.

2.5" diameter piping

Regards.

Originally Posted by parmas

When in the past had the front mount intercooler setup, putting the jet just at the exit of the intercooler would be too far. Also the mist needed to climb a 2" pipe height of car -> 90 degree elbow -> throttle body -> intake plenum.


Every setup is different but if you have a picture of your setup we could help you better according piping length and size....

Also 85F or 29DegC is hot but not VERY hot. Here in Malta we see 35C+ in summer and I run no intercooler / only water injection.
Temps are 40DegC / 104F during slow running and sometimes 55DegC/131F when long idle. On boost and water injection I see 30degC / 86F

Also I would position the IAT in the plenum or into throttle body or the nearest possible

[parmas]

Originally Posted by boukman

Hi,

This is a picture of my setup.



You can see my two jets and IAT sensor position.

2.5" diameter piping

Regards.

The IAT is positioned wrong. If you leave the setup as it is and move the IAT sensor into the plenum, air temp readings will go down drasically.

Could you take a picture from top of the engine showing intercooler output piping length and angles ?

[boukman]

Piping picture:

Originally Posted by parmas

The IAT is positioned wrong. If you leave the setup as it is and move the IAT sensor into the plenum, air temp readings will go down drasically.

Could you take a picture from top of the engine showing intercooler output piping length and angles ?