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You can read all over the internet that COI's can give you HP and torque gains. True or is it snake oil? Worth the money? Also, will it void out a warranty?
It depends on the car, who makes the intake and your expectations.
But in general, I would say yes - they do work. Most of the reputable makes like AEM, Injen, Fujita or K&N will provide a before and after dyno for proven gains.
Most service centers will overlook them, but obviously if you run into some deep water and your engine hydrolocks because of a CAI, you will be SOL.
That will take me a while to read. Thanks for the link.
I forgot to mention, I have a 2010 Ford Fusion with the 3.0.
Who makes one for that car? To be a true cold air, they have to put the filter somewhere down near the wheel in the fender and as far away from the engine as possible. Most of the time FWD V6s don't have the room for the piping. If it is just a short ram intake then I would say it is a waste of money. Most of those don't help at all (you'll know because there will be no before and after dyno - and can actually hurt once the filter gets heat soaked) and are just about the look and the loud brassy sound when you step on it. Most times your car will already have a "cold-air" snorkel on its air box and you'd be getting rid of that to put the short ram in. If that's the case just go with a nice drop in panel filter.
You can read all over the internet that COI's can give you HP and torque gains. True or is it snake oil? Worth the money? Also, will it void out a warranty?
I saw a car show a few months back where the mechanic said he installs them on every truck he buys. He had the truck hooked up to a machine that show the difference in motor performance after installing one.
What it does is allow richer oxygen to mix with the fuel burning it more efficiently.
From what I understand you have to be careful driving on flooded streets because the intake is installed low and will suck up water. They make a guard to help prevent this but it's not waterproof.
And any after market modifications you do to the motor will void the warranty.
Is it worth it, that's up to you to decide. This guy seemed to think they work. But I wouldn't put to much stock into what he says because the brand he was using also was a sponsor of his TV show.
Do they make more power? Most of the time yes they do.
Will it be enough for you to notice? Most likely not. On small engines you typically gain less than 5hp. On larger engines you will see a larger gain as they then to need the increased volume.
What you could gain is an additional MPG or two due to reduced restriction assuming you can keep your foot off the gas and resist listening to the whooooosh sound but even this is hit or miss.
For the money you're best bet is a hand held tuner / programmer and i'm not sure if they have anything for that car. I've personally seen 45 additional HP at the rear ties on a 2010 Camaro.
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