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Anyone else running a cold air intake on their rides? Just wondering if you notice. A difference when this cold weather comes along. My little 4 cylinder wrangler just gets very peppy when this cold weather hits.

3 of the best thing ive learned over the years for hp and better mileage (and the money)are intake exhaust (because more air coming in needs to go somewhere) and spark most factory spark sys. only give the minimum spark needed to burn off so an upgraded one with a higher spark will burn more of your gas in the cylinder that isnt being burned

Deltacottonboy12 wrote:Anyone else running a cold air intake on their rides? Just wondering if you notice. A difference when this cold weather comes along. My little 4 cylinder wrangler just gets very peppy when this cold weather hits.

Cold air is denser.

I use cold air intake and a throttle body spacer, same on my last truck. Well worth it.

Ok, enlighten me as I am by no means a mechanically inclined.

What are the advantages of cold air intakes?

Cold air is denser and containes more oxygen which means you can burn more fuel resulting in more power.

I do not know about higher O2 content, but it is denser because of higher atmospheric pressure associated with air behind a cold front so it is compressed so to speak and can fit a little more air into the same vol., or in this case, the intake amount. Naturaly aspirated engines, weather gas or diesel, run more efficent in cold weather. I worked on a 100' crewboat back in the day with 2 12 cyl. Cats that JUST loved the cold mornings and you could feel and see(speed) the difference!

Deltacottonboy12 wrote:Cold air is denser and containes more oxygen which means you can burn more fuel resulting in more power.

y u want 2 burn mo fuel?

4dawgma wrote:

Deltacottonboy12 wrote:Cold air is denser and containes more oxygen which means you can burn more fuel resulting in more power.

y u want 2 burn mo fuel?

not necessarily burn more fuel but burn more fuel that goes into the cylinder that would otherwise be unburned = more hp

4dawgma wrote:

Deltacottonboy12 wrote:Cold air is denser and containes more oxygen which means you can burn more fuel resulting in more power.

y u want 2 burn mo fuel?

Better, or more efficent, burn = increased power.

mudsucker wrote:

4dawgma wrote:

Deltacottonboy12 wrote:Cold air is denser and containes more oxygen which means you can burn more fuel resulting in more power.

y u want 2 burn mo fuel?

Better, or more efficent, burn = increased power.

Increased power for the same amount of gas that would normally be burned with higher temps. It also results in better fuel economy because the engine doesn't have to work as hard to maintain speed.

mudsucker wrote:I do not know about higher O2 content, but it is denser because of higher atmospheric pressure associated with air behind a cold front so it is compressed so to speak and can fit a little more air into the same vol., or in this case, the intake amount. Naturaly aspirated engines, weather gas or diesel, run more efficent in cold weather. I worked on a 100' crewboat back in the day with 2 12 cyl. Cats that JUST loved the cold mornings and you could feel and see(speed) the difference!

That is correct. More mass in the same volume.

More mass in the same volume.

Just like lead vs. steel!

while the principles behind the cold air intake are nice, if your like me and are offroad alot they make it a helluva lot easier for fine dust particles and all the enter the engine which causes long term damage. I have owned quite a few jeeps, if you use it offroad alot get a snorkel, it looks sweet and you will have air 5x as cold as a cold air intake and it will actually decrease the amount of dust your engine gets by a lot, plus if you ever go to deep your safe. If not then it is not very hard to rerout your intake box farther from the engine (basically what a cold air intake does), however in all the cold air intake systems they use a filter that is not enclosed in the box so dust gets in very easy and if you happen to splash water up there you are in trouble...


just my .02 cents


-spencer-

i run a S&B cold air intake, 4 inch motoblue exhaust, 75 horse injectors, a hugh torbo and a few other things on my 06 duramax, getting 19 to 20 mpg when i keep my foot out of it, it makes a lot of sports car drivers made when you blow smoke all over the side of there car or smoke them at the redlight, but on a modified diesel seems like the warmer it runs the better power there is, cold air comming in on a diesel helps a lot with exhaust gas temps,