papa tiger

Simply isn't material info. Chemists proved water clings to oil vapors so if the majority of the oil vapor is condensed in a oil separator the water vapor then has none to attach itself to thus far less water will condense in the exhaust area of the CAC and thus greatly remove the Hydro-loc possibility's. I'm going with this as favorable solutions + drilling the tiny hole except the 15 has a far different designed exhaust area for the CAC exit back to the intake throttle body area + grill design for upping gas mileage. I could see a small tube back to the intake manifold with a check valve in it when under boost, but since the PSI may be similar at both ports ( spots ) it may be a nonworking thing as a boosted engine just doesn't have much of a working vacuum in the cylinder head ports area if the turbos match the design properly. Reason for removing turbo lag is to remove that starvation/vacuum issue in the 3.5L EB. The turbo boost simply responds so quick to the throttle body opening /torque needs by the ECU/PWM not opening the throttle body plate fully any of the time, and lesser degrees of opening are used thus the turbos are cramming air most all the time unless you quit asking for torque by letting up on the gas. Air moves so fast thru the system, air equals CAC or Intake most instantaneously and the entire system is a torque asked for response / air pressure design control unit. Using a lower air pressure hole doesn't effect the controls much as it just injects fuel and times the needs accordingly to the air pressure it is seeing close to the throttle body entry. The ones with turbo diesels discovered this also and added oil separators but the difference in air pressure in the air intake before the turbo generate a vacuum source.

woody3

Personally I cannot believe/accept the possibility that the ECU calls for boost while the throttle plate remains partially closed. I have always believed that the Ecoboost's design uniqueness comes from simply using boost as a means of extending the engine power generation once N/A intake flow is exhausted.


On the other hand if we assume that the CAC offers a bit of flow restriction in "high cruise" then the turboes might well be spooled up in order to maintain atmospheric pressure at the CAC outlet.


Plus that would help to explain the condensation issue.


If there is a pressure drop across the CAC during "high cruise", throttle almost, but not fully open, then the formation of condensate while "off-boost" becomes perfectly understandable.


Furthermore I am of the understanding that the 2015 is making use of airflow vanes/shutters to prevent the cooling of CAC crossflow air during cruise mode, or "off boost mode, whatever.

woody3

I have seen rumors, hints, that the 2015 has fixes for both the CAC condensation problem and the DFI intake valve carbon build-up problem.


The 2015, like the Lexus GS has done for years, uses SFI for low HP cruise, which of course also serves to "wash" the back side of the intake valves.


DFI is reserved for boost mode.


The CAC now has a vane/shutter system that automatically closes and blocks cooling airflow through the CAC during "off-boost" driving.


The question becomes, will prior purchase Ecoboost owners be offered a retrofit kit??


One could see that retrofitting the vane/shutter system to older F150 Ecoboost trucks might be entire possible, POC!


SFI....?? NOT!


But, wouldn't a simple single throttle injector also solve the problem, PLUS keep the entire throttle body clear of EGR deposits?


Ford... Listening!

isthatahemi

So where did yo get the idea the 2.7 has SFI?

Kenferg1

You do know that the EB is a DI engine only. At this time Ford doesn't do any port type injection for the carbon issue. In fact they claim to manipulate the valve timing and DI timing to address this. So far it doesn't appear to be successful for high mile engines, but I haven't read about anyone noticing significant problems because of it either. If they were, then there would be endless bitch threads about it.

As far as the active grill shutters, my understanding is that their sole purpose is to divert air from the engine compartment to improve aerodynamic efficiency. If have not read anything that indicates they are used to manipulate the CAC temperatures. If you have please link to the site because I would be interested to know whether or not it is effective.

papa tiger

Believe the outlet on the new CAC design degrades the ability of Condensed build up.


http://api.viglink.com/api/click?for...%20-%20YouTube

woody3

Apologies all around..


Looks like I spoke to soon..... wishful thinking I guess.


Read an engineering white paper that seemed to say these improvement would be in the 2015 F150 Ecoboost. Link no longer works so I guess Ford had it removed

Carbon2.7

You guys want to solve the moisture problem?? Just vent your pcv to atmosphere problem solved.. contact your programmer and have him turn off the crankcase pressure sensor and taaadaaa no more oil or moisture in your CAC just run two long hoses down by your transmission that way your not bothered by the crankcase fumes... I've had mine set up for 5k miles .. no oil residue... if you have to pass smog test just plug everything back in problem solved..

mlcacioppo

The intercooler is under pressure, not vacuum so it should not SUCK UP water from a deep puddle.

isthatahemi

Back from the dead lol.

Pressure or vacuum, it's the airflow velocity that would move any liquids around, not "pressure".