Maf ,blow thru and water/alco injection questions?

[AL92]

I got a dual stage cooling mist water/alco system. I am wondering if move my maf to blow thu and put it off the throttle elbow will it be affected by water spraying into the elbow so close to it?Also will it be affected by water /alco being injected way back at the intercooler inlet pipe? I have heard some say it will whack the maf and to keep my draw thru and others say the water will be fine mist enough to not affect things.You use a very small jet before the intercooler and bigger one after.Also on a tyical rainy day quite a bit of mist is drawn into the engine thru the filter in most any car.This has no effect to speak of on any maf I have seen so really all the water injection is doing is same thing as rainy day.Anyone have any concrete experience on this not just opinions? Also the turbo air is like 300 degrees so would think that would flash the water /alco vapor pretty quickly and not let any big droplets thru and also think the jets are directional spray but can't remember exactly.

 

[chicagoboostin]

subcribed.

 

[Turblown]

Subscribe me too!

(I've heard it's ok on VPC, but I would like to know about the MAFT as well... wisemen?)

-Turblown

 

[44pirate]

As long as the jet is between the TB and MAF, and at least 3 inches from the MAF, you shouldn't have a problem.

 

[98spydert]

The water doplets or water vapor will cause a hot-wire style MAF to read wrong. Like 44Pirate said, AFTER the MAF sensor and at least 3" after it.

 

[Irrational]

The water doplets or water vapor will cause a hot-wire style MAF to read wrong. Like 44Pirate said, AFTER the MAF sensor and at least 3" after it.

If the first injector is before a FMIC the intercooler,you still think it would mess up the reading's?

 

[97TSIAWD]

In the other alky thread this also came up. From what was said, it seemed like as stated it would have a mal effect on the maf. Off the TB elbow is your best bet. Dual stage, I'm guessing two nozzles? Either way, if you spray near the IC I don't know if the mist will be strong enough to effect the maf, but I've also read it isn't very effective that far away. I'd say stay close to the TB, inside the elbow, and not before the maf.

 

[Irrational]

In the other alky thread this also came up. From what was said, it seemed like as stated it would have a mal effect on the maf. Off the TB elbow is your best bet. Dual stage, I'm guessing two nozzles? Either way, if you spray near the IC I don't know if the mist will be strong enough to effect the maf, but I've also read it isn't very effective that far away. I'd say stay close to the TB, inside the elbow, and not before the maf.

I just thought it would be grate to shock all that hot air right out of the turbo to get your temp's down before the FMIC the hit it again before the manifold like you said. But i cant see how hitting it before the FMIC would not help much?

To reword my Question- don't you think all that hot air would dissipate the water before the Maf?

 

[98spydert]

I just thought it would be grate to shock all that hot air right out of the turbo to get your temp's down before the FMIC the hit it again before the manifold like you said. But i cant see how hitting it before the FMIC would not help much?

To reword my Question- don't you think all that hot air would dissipate the water before the Maf?

The nozzle will do it's job where ever it is in the IC pipes. The science of water vaporizing and absorbing latent heat is going to happen no matter what. Intercoolers cool air but . For example, 300 degree air will be cooled 60% to 180 degrees loosing 120 degrees total. But 220 degrees loosing 60% of it's heat would only drop to 132 degrees loosing only 88 degrees total. Let the IC do it's job first then take away from what's left... if that makes sense.

And yes the water mist being injected into 300 degree pressurized air would result in instant vaporizing. hot-wire style mafs aren't as accurate when reading air with fine water doplets (probably not a problem at full boost) or very humid air.

I think the absolute best way and the way I'm running the pipes on my Talon will be to have the BOV further away from the throttle body, closer to the radiator (picture short route piping), the GM MAF next in line and further from the TB that what we usually do, then the water injection nozzle/s 3-5" after that so they've got a good 6" or so of straight pipe before hitting the turn into the TB.

 

[PSI TSI]

Just a thougth here would it hurt the maf to locate it pre intercooler?
Would the hot air burn it out?

It would clean up the top of the engine bay and at the same time alow the nozzles to be located anywhere.