Air Intake temps

[Solja]

ive done abit of logging of the iat over last few years usually doing back to back highway pulls or on a rolling road dyno, with the fmic alone it was 12-15degree over ambient. with a 300cc meth nozzle with 50/50 mix it was 8-9degrees over, with 100%meth it was 10-12 degrees now with a 600cc nozzle with 50/50 mix and a external fmic sprayer im getting consistant 5-6degrees over ambient so glad its getting down

[Stoffa]

can you use water spray kit (without meth) to bring temps down without needing to tune to suit, I guess meth lowers the A/F ratio

[soopersubaru]

 Stoffa said:

can you use water spray kit (without meth) to bring temps down without needing to tune to suit, I guess meth lowers the A/F ratio

If you are running the G4 then there will be no issues with tune versus IAT changes.

This is spray over the outside of the intercooler / radiator that i am referring too..TMIC or FMIC or WAIC front

HOWEVER if you are going to water injection directly into the intake air/manifold then yes retune to suit the mix (water/meth) will be required.

Just trying to clarify the difference in these two "spray" scenarios before one is confused totally by statements.

Not sure if Solja is injecting into intake or spraying the intercooler as meth can and is used in both applications.

Both these methods reduce combustion air temperatures.

Spraying the cooler is easy.....Injecting is very technical and requires careful and knowledgeable tune/setup.

WRC subarus used both....No meth though.

[Stoffa]

Its ok I do understand the 2 setups, was just thinking about using an internal spray setup but dont like the idea of relying on the meth to stop det, i.e you have your foot up it and get a blockage in the meth tank and bang $10K+ engine gone! so was wondering if a 100% water spray injected into the intercooler would need to be tuned or if it would simply lower the temps enough for a bit of extra cooling without needing the tune to be adjusted.

I've had an answer via PM, yes I can but it can cause a little stutter when the spray first starts

[Guest]

Logged a 60km trip. Cruising open road under no real load temps between 10-12, bit of load 12-14. On a long pull full boost it went up to 28 and took 80sec to come back down. Changing a few things then will see what it tells me.

[Stoffa]

what was ambient?

what brand intercooler and is it bar and plate?

im running an HDi tube and fin and it doesn\'t seem to keep that cool, but my temp sensor is mounted on top of the engine and yours is in front with your manifold flipped

[Guest]

Ambient = outside temp? About 20-25deg normally. Doesnt recover well though from on boost.

Chinese set up luxury sports I think. I wonder if being flipped keeping the piping off the engine helps?

[titian]

 evowrx said:

Ambient = outside temp? About 20-25deg normally. Doesnt recover well though from on boost.

Chinese set up luxury sports I think. I wonder if being flipped keeping the piping off the engine helps?

A? Put a fan on it maybe? ;D :o You should know the answer by now : :

[Guest]

 titian']

[quote name='evowrx said:

Ambient = outside temp? About 20-25deg normally. Doesnt recover well though from on boost.

Chinese set up luxury sports I think. I wonder if being flipped keeping the piping off the engine helps?

/quote]

A? Put a fan on it maybe? ;D :o You should know the answer by now : :

Would need two fans otherwise it wouldnt be balanced. Thats the answer...

Pretty much its not getting heatsoak from logging Ive done so far it was more can it be better with a fan. A fan isnt going to do shit at any sort of speed but two would coz its balanced.