The point at which air enters the intake tract of a motor vehicle or stationary engine
The term intake can include the air filter box, fresh air intake tube, throttle body and intake manifold.
Questions tagged [air-intake]
109 questions
29
votes
7 answers
When is a cold air intake system beneficial?
Cold air intake must be one of the popular mods there is, and one subject to the most controversy as well. Manufacturers of such systems advertise 5-20 HP gains, yet there are claims that this mod does nothing and may even hurt performance (even…
I have no idea what I'm doing
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votes
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How do cars drive through deep water as shown on many videos online?
I have read many warnings about driving a car through deep water. Some problems that this can cause is destroy the catalytic converter and in petrol engines water can cause damage to spark plugs. And in diesel cars I thought you needed a special…
Linux_user0987
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Why or why not increase engine efficiency by running the car "fuel-lean" (using a turbo or supercharger)?
Everyone wants their cars to use less fuel, right? I read the following passage about running the car fuel lean from this website:
Run the engine fuel-lean, that is, use excess air. It is well known that fuel-lean running improves the efficiency.…
Max Goodridge
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What is the difference between a MAP and a MAF sensor
Generally a car uses either MAP or MAF to determine the air flow index the engine is getting and that older cars used to have MAP and newer ones often use MAF and cars like the Mitsubishi EVO uses both of them.
I would like to know
how they operate…
Shobin P
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Yamaha R1 intake tract configuration
Interesting Configuration
The Yamaha R1 has a very strange intake design. Notice the intake horns in the image below. They sit above the throttle bodies and are not attached directly to them leaving an air gap between the throttle bodies and these…
DucatiKiller
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13
votes
6 answers
Cold Air Intake and Engine Wear
I'm contemplating whether or not to retrofit my car with a cold-air intake and performance air filter. Will doing so lower the lifespan of my engine? That is to say, increase likelihood of engine repair, relating to the aforementioned alterations,…
culturalanomoly
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Cold air intake causing rich condition
This is a follow up question to my initial question which can be found here : LTFT and STFT values are off and don't make sense
Car is a 2015 F10 M5
Mods : Cold air intake, aftermarket rear muffler (just section 3).
Since posting the initial…
DerStig
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2 answers
How do variable-length intake manifolds work?
I have heard many vehicle manufacturers have been using this to improve power and torque figures.
They do this by altering the length of the manifold, I am hoping for better diagrammatic explanation.
Shobin P
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10
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Why Have More Than One IAC Type Device On an Engine?
I've had two Mazda's, a 97 323 and 98 626. On both these car's engines there was only a single IAC mounted on top of the throttle body, and no other device for adding air flow on the intake side.
However, on my 99 Nissan Almera with the GA16DE…
Robert S. Barnes
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What are the pros and cons of installing a high-performance air filter on a bike?
What are the advantages and disadvantages of installing high performance air filters (K&N,Green cotton,etc.) over original filter?
What are the changes/working occur internally?
KIRAN K J
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8
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ITBs with a charged engine
Are there any benefits of running independent throttle bodies with a super/turbocharged engine, as opposed to running a single throttle body on the same engine?
If so, what are the benefits (and how extreme are they)?
Static characteristics of…
James Monger
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What is this U shaped tube sticking off the intake hose?
On the intake hose for a 2001 Honda Prelude SH there is this U shaped tube with one closed end (sorry about blurry shot):
(The tiny thing sticking up on the top left isn't a tube it's just a solid structural support piece.)
The part is only…
Jason C
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Do air filters purify air better with age?
I have been reading in a few places that air filters get better with age, is this true? And how much better?
Would it have any effect on quality of the oil or make oil dirty faster?
Or is there not a great deal of difference between new and used…
ceefax12
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Is it possible to extend the length of the shaft on an existing turbocharger, further distancing the compressor from the turbine?
I'm toying with turbojet engine ideas, and over the course of my research it occurred to me that the combustion chamber could be more power-efficient and space-efficient if it was aligned in the desired direction of airflow.
That said, if the…
Giffyguy
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How much oversize should you target when choosing a throttlebody?
This is in addition to my previous question about throttle bodies. I know it may sound a bit subjective, but I think it has a clear technical aspect, and I have done a considerable amount of homework.
To elaborate; I'm looking for a throttle body to…
Bart
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