So, having driven around for about a week now I feel like the throttle response is more crisp

Could just be in my head though who knows?

 

Mine sounded like an old 4barrow kicking in when mine was done years ago.
Yours does look better than mine did back when.

 

When you say crisp do you mean it feels like there is less lag between the pedal goes down and the air actually arrives at the motor?

 

It looks like the inlet is 3 times the cross sectional area of the original. That's a substantial increase in flow

 

No it's not. The stock intake flows enough for anything but a modified engine.

 

I run an open(ish) exhaust and a 5⭐ Tuning, premium octane performance tune on my truck also.

New ford plugs, new ngk "wires" new bosch knock sensor. Plugs torqued to 28 lb/ft.

 

Being an Aero Space type person I am not even going to try and say how most Laymen does not understand what the airflow does or does not do in Bernoulli's Principle and the Venturi Tube.

Let's just say that too much is bad and too little is bad. You want it there if needed and you want it to not be there when not needed. Your airflow sensor will tell the PCM what is going on and it will adjust.

 

[QUOTE=Stoned Pony1;5256264]Being an Aero Space type person I am not even going to try and say how most Laymen does not understand what the airflow does or does not do in Bernoulli's Principle and the Venturi Tube.

Let's just say that too much is bad and too little is bad. You want it there if needed and you want it to not be there when not needed. Your airflow sensor will tell the PCM what is going on and it will adjust.[/QUOTE
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The engine displacement minus the pumping losses at any RPM determine the max air the engine can intake under atmospheric pressures.
Below this operating point, the throttle body plate open angle dictates the amount of air that will be drawn in by the engine at any RPM.
The simple term for this is "variable efficiency engine" Adding or changing anything in the intake air stream at the entry point will not change intake airflow rates unless the original situation was a HUGE restriction of which the original intake hardware was not. Both the 4.6 and 5.4L engines use the same hardware and filter element.
In a normal sense one cannot feel less that about a 10 HP increase and that does not occur until the RPM get into the peak power range where you do not run all the time.
A 4.6L (281 Cu/In) is lucky to ingest much more that about 350 cubic feet per minute of air at 5000 RPM under the best of conditions.
Enlarging the end of the intake won't change this below wide open throttle conditions where the throttle plate is the controlling restriction that makes the engine a variable efficiency machine.
It is proven every time the 'pedal' is applied to generate more power to move the vehicle..

 

I did the Gotts Mod on a 2004 4.6 Screw. While I never dynoed anything in regards to it, the after results were apparent. I didn't get any better fuel mileage because that's not what the Gotts offered. What it brings to game was a better high end throttle response. The 4.6 would literally lay down and lose power once around 4000 rpms. The Gotts changed that for my particular truck. Yes, I change air filters at 15,000 miles so no, it wasn't a filter change issue. I made mine per the instructions posted here out of white PVC. I would have much rather bought the damn thing as it was a time consuming piece of work grinding the PVC down to fit. But then maybe I was just particular about what the finished product looked like. BUT, if you'll look at the stock snorkel, the inlet is considerably smaller at the actual intake end than the Gotts. That's probably where the difference is. But the Gotts is only going to help at upper rpms, not where you would normally drive. For my gutless wonder 4.6, it was worth the time and cost to do it. It was still gutless but but it didn't fall on it's face anymore at peak rpms. And just so I can say it, my current 2014 3.7 is a major ballistic missile compared to the 4.6 I had. Now you understand that anything you can do to a 4.6 in a heavy truck is an improvement.

 

[QUOTE=Bluegrass;5256335]
Blue Grass you don't get it and I more than likely should have used different words.
Under the Bernoulli's Principle and the Venturi Tube it is not about max air but airflow that is dirty.

Under the Gott model, he cleaned up the airflow a lot from a Venturi effect to a sup ram effect more or less. Yes, any engine whether it is a car, truck, jet, or rocket engine can only take so much air before they have a big problem and cut off for better words. (Where an engine starves for fuel and or air or too from both).

Why do you think port and polish of intakes helps the engine?
It is dirty air.
Yes, the air filter causes some as well, but the air under Gott helped that before it got to it.
That all goes right back to the Bernoulli's Principle and the Venturi Tube effect.


Right now I don't have the time to write a thesis on Bernoulli's Principle and the Venturi Tube, but you can look up I would think on the web about it.

 

Fight! Fight! Fight!

 

No fight! We don't do that here. We're adults, not children. Anybody that's spent 5 minutes under the hood would know that not all engines respond the same. Not all will put out the specified horse power. Like the 5.4. I've seen what has to be thousands of dyno runs and not one ever made 300HP. More like 260 tops, and that's a 3V engine. What works for yours may not do anything for mine. So while math creates hard numbers, engines apparently never get that memo so they do what they want.

 

What about the 5.4L in the Lightning?

 

environmentYour right about the fighting thing.

I have seen a 1982 KTTA 600 diesel engine put over 1200hp on the ground in a v8 and one inline 6 engine put a grand on the ground.
I have also seen 427 crossbreed 429 Ford put over 1000 on the ground. Mind you it was a funny car
Now all of these were in an environment with the right conditions.
But the Laws of Physics are still Laws that work.

 

I just ordered the one in this thread. I'll do some timed 0 to 60 runs before and after when I get it to see if there is a difference. Maybe some timed faster runs if conditions permit.