Me and my Dad put my CIA on yesterday. It's actullay homemade but it works great. It's a 3" piece of rubber hose on the end of the VAM then a 3" 90 deg. SS elbow with a k&n on the end. I have noticed the rear end breaks loose a lot easier now. I love it ! Just thought I let you guys know.
Just to clarify;
It's CAI = Cold Air Intake
I've got way too much time on my hands!
When I ditched the VAM I welded up a steel 3" elbow that mounts the filter right at the hole in the fender, the best thing is the sound with no VAM! But I think it's contributed to performance a lot also.
Quote:Originally posted by evintho:
Just to clarify;
It's CAI = Cold Air Intake
I've got way too much time on my hands!
my bad, but you knew what I meant.
Didnt someone just post a little while ago that they got almost 20hp from moving the cone from the front of the car to directly on the vam? I run mine right on the vam, i think it sucks in air a lot quicker that way.
Yep. Turbos don't like increased pressure ratios. If I were to ditch my air meter, I'd bolt a K&N right onto the turbocharger.. The only piping I'd make is maybe a 3" length of piping to get it away from the exhaust manifold.
I cant see it "sucking" air in quicker, the tube is filled with air either way. Theres no vacuum inside the tube so it doesnt have to fill a void space. The only benefit is the fact that your using a cone filter which allows air to be pulled from all sides. I would like to see numbers by adding a pipe to the K&N and sticking it in the fender vs the K&N on the VAM.
I could see it being a waste to put the K&N in the fender if you have a fmic. The idea would be to pull cooler air. Yes the motor strives for cooler air but the difference in temp from the fender I think would be so minimal you wouldnt notice a difference.
When the FMIC goes in I plan to take a couple runs on a dyno and I will see how it goes.
Yes there is vacuum in the tube relative to outside air pressure. The engine and turbo are air pumps that lower the pressure in the intake so atmospheric pressure forces air into the engine. As you say the larger surface area the filter has the easier the atmospheric pressure can push air into the engine. The air would like to take a staight path so the fewer changes in direction the air has to make the greater the density of the air due to higher velocity and the less heating of the air. Shorter is better again because of frictional heating. Cooler air is always better but you are right that, outside a laboratory, any effect would be difficult to discern. Vacuums don't suck, air pressure blows. And the air cleaner that you replace has three functions: It houses the air filter; It prevents fires; It is a muffler for the noise made by the pulses of air moving thru it.
I'm not an expert or anything but I think putting the air filter directly on the end of the VAM would keep it inside the engine compartment, therefor sucking hot engine air vs mine, out in the nose pulling cool outside air. That's just my theroy !