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Most of the studies i have seen show that the intake tube material has little bearing on performance, its more just a matter of how you want it to look.
Most of the studies i have seen show that the intake tube material has little bearing on performance, its more just a matter of how you want it to look.
that's odd. i've had a BBK cai, two mustangs ago, and while it was ok when the engine was cold, after about 15 dyno pulls it was robbing power - could never duplicate dyno results of the first pulls, even with few mins cooldown times... then again, that's mustang engine bays... not exactly the most spacious engine bays out there...
I was lookign at my buddies F355 Ferrari and the whole intake system all the way to the throttle boddies are made of plastic. I have heard that for every degree of intake temp that you can reduce is worth 2% in power this is why intercooling forced induction is so important. Plactic will transfer less heat and retain it for a shorter period of time compared to a metal intake tube.
I was lookign at my buddies F355 Ferrari and the whole intake system all the way to the throttle boddies are made of plastic. I have heard that for every degree of intake temp that you can reduce is worth 2% in power this is why intercooling forced induction is so important. Plactic will transfer less heat and retain it for a shorter period of time compared to a metal intake tube.
pfft, everyone knows ferraris are made by cheapskates they coulda been cool and made a carbon fiber intake like koenigsegg did for the mod motor...
j/k, in a car environment it probably is more of an impact, but as Jusnes said, i think in a truck with a heyooge engine bay it's a slightly different story...
Pilot 10 Thanks. I've learned alot about the CAI's thanks to all of you. If plastic is better for withstanding heat then why don't they place that heat shield material on the outside of the plastic tubing? Maybe I'm making to much of a big deal about the tubing or ducts but as Fosters said, every digree reduced is 2% more HP. I'm thinking of a way to keep the tubes cool and pull the cool air from outside the driverside fender that all.
Actually it's more like every 10 degrees reduced is then you get a 2% increase in hp.
They have a old post that trys several different things with good numbers that'll I'll try to find.
It showed the stock air intake and box that were wraped with somthing to stop radiant heat with a K&N filter was the best bet. With the most HP, mileage, and 1/4 mile time gains.
Actually it's more like every 10 degrees reduced is then you get a 2% increase in hp.
They have a old post that trys several different things with good numbers that'll I'll try to find.
It showed the stock air intake and box that were wraped with somthing to stop radiant heat with a K&N filter was the best bet. With the most HP, mileage, and 1/4 mile time gains.
10 degrees is more like it. the difference in power over diff dynos on the mustang was in the 7-8hp range; if it was 2% for every degree, i'd be out 20-30hp when the engine got hot...
ive always heard 10 degrees for 1%. The point is, its not too significant. And about that link with the heat insulation material, you need to look closeley at that test. It tests air coming into the filter, it does NOT test the air after it has gone through the tube. The studies I have seen show that the tube material does not matter.
I love my K+N I installed it just gets so dirty so quickly I love the sound and everything. I may try to customize a box for it so I can keep it a little cleaner...
The stock air intake does pick up cold air from outside the engine compartment, is made of plastic, flows more than enough air for the 5.4, it fits properly, seals properly, doesn't require oiling (avoids MAF sensor issues),was designed and tested by Ford engineers, and best of all, it's free and already installed on your truck. I think most of the gains from CAIs are in the mind of the purchaser, as they make more noise. And, I don't buy so called "dyno" tests from CAI manufacturers, they have a vested intrest in selling the product now, don't they.
The stock air intake does pick up cold air from outside the engine compartment, is made of plastic, flows more than enough air for the 5.4, it fits properly, seals properly, doesn't require oiling (avoids MAF sensor issues),was designed and tested by Ford engineers, and best of all, it's free and already installed on your truck. I think most of the gains from CAIs are in the mind of the purchaser, as they make more noise. And, I don't buy so called "dyno" tests from CAI manufacturers, they have a vested intrest in selling the product now, don't they.
ahhhh but the sound just isn't there..... gotta love that age old woooooosh sound...
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