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Hi all, new here. Just found this forum. Got a question. I have a 2004 EX, and fuel efficiency is primary. I replaced the stock air filter with a K&N and my mileage improved. I was thinking about going to a cold air induction to increase the filtering surface area and smoothing the air flow to the intake, which should improve mileage. A fellow gearhead said the cold air will decrease fuel mileage andI want the air warm for better fuel mileage. Do any of you have experience with a cold air induction and did it increase or decreace your fuel mileage?
Thanks
Jim

 
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dude, warm air is bad. cold air burns way better. i dont keep track of mileage because i cant keep my foot out of it long enough to measure it. but cold air is 1000000000000000 times better. your fellow gearhead doesnt know his *** from a hole in the ground

 
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Cold air doesn't necessarily burn better. People get CAIs because the the colder air is denser meaning it contains more oxygen. The more oxygen you have the more fuel you can burn the more hp you make. Theoretically if your engine is seeing more oxygen it's going to add more fuel which could lower mileage. If I were you I would keep the set up you have now.

 
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Exactly, colder air is more dense and contains more oxygen. Our cars are equipped with a OBD II computer that will sense this and add more fuel. The amount wouldn't be a alot to really notice a difference. Most people burn more fuel because they jump on the throttle to hear the new sound it makes.

 
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im a victim, but now that ive had it for more than a month, and im not on it as much, mpg has gone up by maybe 2-3mpg...

 
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The colder the air the better and YES I do have a cold air intake on my car and yes it does make a big difference and the gas milage went UP not down and its a noticable amount of power difference. I have a 2004 VP and I put an Injen CAI on it.

 
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Thanks! This was the kind of info I was interested in. Being much older than most I see here my primary concern is fuel mileage and engine protection, not tire burning performance. I'm going to research this a bit more. I see various CAI set-ups and I'd change to an amsoil cone filter. I'm sold on amsoil and have their filters in all the vehicles I own, except the civic because they don't make one as I have found.
Jim

 
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w/out a turbo or nos you wont see tire burning performance from that motor any way, but getting a freer flowing exhaust can also help MPG ( as long as you stay out of it, i have a crower stage 1 cam, aem V2 "cold air" intake, apexi N1 full cat back on my 01ex couep and i got 38.5 MPG's on my last tank of gas while i stayed out of it, and when i dont stay out of it i get 34-36 MPG.

 
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Do you have a reccomendation of a particular brand? I looked on ebay and they had several. I want an all weather type so I don't need to worry about water. Does anyone have a picture of their CAI they would be willing to share?
Thanks
Jim

 
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The AEM v2 isnt really a "cold air" intake. Cold air intakes have the filter placement outta the engine bay (away from engine heat) to grab the cold air. Not to confuse you even more, but with cold air intakes, you got more piping, which is just more distance the air has to get sucked over- some say this slgihtly reduces reaction time of the engine, and therefore loose power on the low end.. but whatever, dont worry about it since your goal is MPG. If you get cold air, and your filter is low, pick up a bypass valve. Its basicaly a sponge that fits intbetween a pipe connection. The deal is if you hit a puddle, and your intake sucks it up, instead of that water heading to your engine, it'll hit the sponge, and your intake will pull in from the side of the sponge instead of the water which would fvck up your engine. Its been known to happen on some ppls cars, but I'd say the majority of people here havent had a problem with hydrolock... but why not be careful.

 
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So, this is a question thats been bugging me for a while, just haven't had the time to ask. Sorry if I am thread jacking. If colder air is more dense, and therefore contains more oxygen and should in turn technically help with MPG, then why have I lost MPG now that it is winter and colder out? you'd think the colder the outside ambient temp, the colder the engine bay and air entering the intake would be.. or is there more to it?

 
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A cold air intake is like puting a new filter without the box will you can say it do help a little on mpg but not much dont expect to gain over 6 mpg....plus it just breathe better and perform better....

 
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^^ yes, if you look at your stock air box, the sucker part of it is just behind the passanger headlight. The ait goes through that, then through the resonator, a bend, the filter, and then straight down. How constricting... A CAI shortens the path, puts the filter on the end and drops the resonator to take the shortest path possible.

 
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ok well heres my info on the topic. This is my first winter owning the car and i was dumb and put my intake on in november. Before i put my intake on i was getting 44mpg. This was really good but with the combination of -10*C weather and the intake i've dropped to 41mpg. I have seen an increase in power. I used to shift at 3500 and now i shift at 4000-4500 and i never jump on the throttle except in those perfect situations where u just gotta do it. BTW my intake is a K&N 57i. I would highly reccomend it. It's got the biggest filter ive ever seen on it. It isnt a cai but it comes with a Dryer hose that you can install to bring the cold air to th intake LMAO. I havent put it on yet but i might in the summer. I think all in all ive gained power and havent lost much milage cuz my mom's 00 accord loses 2-4 mpg in the winter. so i dont think losin 3 in the cold is that bad.

 
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I have a Injen SRI and the best I got was 40mpg. Before it was only like 35-37mpg.

 
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dang i still havent been able to discipline myself and stay off open throttle. but i still get better gas mileage with my new intake. and btw if u have the cai u shouldnt really be worried about hydrolock. really one of the only ways u can exp that is if ur open throttle going over a huge puddle. i have lots of friends with cai who drive their car normal w/o any sort of bypass valve in the rain and its fine.