Thats what it was.. I was gonna say IAT affects something in the ECU

 

Ok, here's why you don't beleive everything on the internet.

In order you double your speed, you actually need 8 times the horsepower. Power due to drag on a car is a factor of the cube of velocity. Drag itself is Cd*0.5*Rho*V^2. But drag is just a force, not a power. Drag times Velocity makes power required, so that makes the power due to drag equal to Cd*0.5*Rho*V^3. I only needed to read one line in your article to know its going to be wrong. So I'm not even going to go into what they have to say about intake temps, especially since its for a naturally aspirated bike, not forced induction. Plus I saw no equations at all when I skimmed it, he just tells you it has a 1% effect, so I won't beleive it.

If there is any effect from a CAI, the only actual difference would be in the density. If you go back to the equation I originally posted (P=Rho*R*T) at a given pressure, if the density is increased the temperature can go down. Thats the difference between driving your car at 30 degree versus 90 degree ambient temps. However, the difference between a cold air intake and short ram has very little effect on the density because its pulling it from the same atmosphere, the only difference being between a hotter temp/same density vs a slightly cooler temp/same density. Even if you want to say that the cold air intake sits lower on the car, the air will have a slightly higher density, but its so negligible thats its stupid to think it would make a difference.

I'd also be willing to bet, however, that the hotter temp engine bay is actually already a higher pressure as well, so your temp change would be affecting the pressure, not the density.


PS, learn to theorize before doing tests. If results turn out to be something else than what you expect, you'll know why if you know what the theory is behind it.

 

Like this was stated before, we live in florida. The density is going to be the same if the intake is in the fender or engine bay! ITS STILL HOTTER then a cammals vagina on a hott summer day in africa!

 

if that is true, then why does a top mount heat soak so badly, but not a front mount?

 

 

because its sitting right over an engine....?

 

and a ram air sits right next to an engine....

 

look at intake temps when the cars warm and youre standing still... it jumps up but once you start moving air flows into the engine bay... the piping on a fmic will heat soak if the cars warm and not moving the ic itself wont since its so far away... but again onces you start moving its going to cool down

 

Very true! every thing heat soaks...come on!

Even on a FM the pipeing is gonna heat soak!

 

Are you being a smartass?