Best cold air intake for Ecoboost?
05-24-2012, 11:59 AM
#11
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Originally Posted by bubbabud
No you can hear the differance the only differance in performance with the ecoboost is the sound. the ecm will not let any more air into the engine regardless of intake and the factery system is a true cold air intake unlike some after mkt systems that draw some or all of the air from under the hood. If you like the drone or whistle then go for after mkt but you will not see any performance gain.
05-24-2012, 01:41 PM
#12
Evil. Big. Oil.
No you can hear the differance the only differance in performance with the ecoboost is the sound. the ecm will not let any more air into the engine regardless of intake and the factery system is a true cold air intake unlike some after mkt systems that draw some or all of the air from under the hood. If you like the drone or whistle then go for after mkt but you will not see any performance gain.
The ECM sees how much air is entering, calculates the fuel required to get the proper stoichiometric ratio, adds fuel, then lights the match. Calculations are double checked by O2 sensors on the output and further calculations, adjustments are made. If air enters more easily, and/or exits more easily, naturally there will be more air, thus requiring more fuel, thus increasing power. The extent of which will vary from engine to engine, intake to intake, within reason. In theory as long as the fuel injection system, be it standard or direct, can keep up, more power can be made.
How does one explain dyno improvements people have seen from such modifications? I'm the first to be skeptical of some of them boasting crazy numbers, but the numbers are up.
I could be wrong, maybe the Ecoboost has some new magic ECM that I'm not fully understanding, but my experience "tricking" more than a couple computerized vehicles to make more power leaves me calling shenanigans on your statement. Using stock ECMs and figuring out ways to get more air into and out of has always garnered me more power up and to the point where the fuel system couldn't keep out. In one instance (my Jeep) swapping out fuel injectors allowed me to push even further without doing any computer tweaking.
I'm I missing something with this motor?
05-24-2012, 02:35 PM
#13
Senior Member
As a matter of fact yes it does have a magic ecm its called throttle modulation the ecm simply closes the throttle plate when the boost level reaches a predetermind point to restrict the amount of air going in to the engine. Your right foot only tells the computer what you would like the engine to do the computer then tells the throttle what it can do. and as the throttle closes down under high boost then the blow off valves open to relieve the pre throttle intake presure dumping the super heated boost air back into the intake stream ahead of the compresser inlet which kind of negates the benifit of a COLD air intake
05-24-2012, 02:59 PM
#14
Haulin Bass!
As a matter of fact yes it does have a magic ecm its called throttle modulation the ecm simply closes the throttle plate when the boost level reaches a predetermind point to restrict the amount of air going in to the engine. Your right foot only tells the computer what you would like the engine to do the computer then tells the throttle what it can do. and as the throttle closes down under high boost then the blow off valves open to relieve the pre throttle intake presure dumping the super heated boost air back into the intake stream ahead of the compresser inlet which kind of negates the benifit of a COLD air intake
05-24-2012, 03:12 PM
#15
I'm not a stranger to the CAI, I had one on my last car (v6 mustang) and where the intake hose met with the throttle body it had a rubber hose which allowed some flex. My concern here is that I know vehicles in the past when under hard throttle would torque over some and move a little(I'm not sure how stout the engine mounts are on these engines). The stock intake has a section of tubing which looks like it is designed to stretch some or compress. However most aftermarket CAI (like the Injen for example) have solid tubing with no area for flex. Is there any chance that over time we should worry about this causing damage anywhere along the intake or where the tubing eventually meets up with the turbos? I could be completely over thinking this but it seemed like it could be a problem in this application so thought I'd ask 
05-24-2012, 04:20 PM
#16
Evil. Big. Oil.
As a matter of fact yes it does have a magic ecm its called throttle modulation the ecm simply closes the throttle plate when the boost level reaches a predetermind point to restrict the amount of air going in to the engine. Your right foot only tells the computer what you would like the engine to do the computer then tells the throttle what it can do. and as the throttle closes down under high boost then the blow off valves open to relieve the pre throttle intake presure dumping the super heated boost air back into the intake stream ahead of the compresser inlet which kind of negates the benifit of a COLD air intake
05-24-2012, 05:31 PM
#18
Senior Member
That doesn't change the fact that you get quicker spool ups from a less restrictive intake and filter media. The turbo can only suck air as fast as the intake will allow it to. Faster spool ups eqaul better throttle response. Reducing the restriction on the intake and exhaust side is noticeable and dyno proven. We all know the throttle body is computer controlled. We also know the ECM learns fuel/air curves and can make adjustments to it's programming on the fly.
05-24-2012, 05:43 PM
#19
Haulin Bass!
Ahhh....so all those dyno's of people getting improved horsepower and torque from adding intakes and exhausts are just smoke and mirrors b.s. I see. Right.
*smh*
*smh*
05-24-2012, 05:43 PM
#20
Senior Member