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  #16  
Old 07-28-2011, 08:11 PM
TBarr TBarr is offline
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Default Re: should i get a new intake because of new exhaust?

don't buy a k&n intake. like every one else has stated they have NO heat shield and you will actually LOOSE power over your stock intake. if you do want an aftermarket intake (which i would not do unless you plan on doing more to your engine) check out the volant. it has a bigger air box than your stock intake and a cone filter which has more surface area than a stock filter or drop in k&n and has a hole into the box at the same location as the stock box. it also has a second hole on the side that faces your fender with a rubber seal around it that sucks air in through a hole in the side of your wheel well
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  #17  
Old 08-10-2011, 02:02 PM
MaDDMike740 MaDDMike740 is offline
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Default Re: should i get a new intake because of new exhaust?

I was going to put a K&N on my ranger but they're friggin $60 however AZ sells the Spectre brand high flow filters for like $22 think im going to try one of those next filter change.
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  #18  
Old 08-10-2011, 04:03 PM
FireRanger FireRanger is offline
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Default Re: should i get a new intake because of new exhaust?

You realize the engine doesn't care if the box says "high flow" on it. It is going to use the same amount of air as it did before. There are a number of more useful things you can buy for $22. Or I can just give you my PayPal address?
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  #19  
Old 08-10-2011, 06:01 PM
MaDDMike740 MaDDMike740 is offline
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Default Re: should i get a new intake because of new exhaust?

the logic behind the decision would be to save money over the long run....the cheap STP filter i normally use is $12 i change the filter 2-3 times a year so do the math.
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  #20  
Old 08-10-2011, 11:17 PM
BigRed10287 BigRed10287 is offline
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Default Re: should i get a new intake because of new exhaust?

While I do agree that changing out your stock intake for a K&N won't do much if anything if you haven't done other supporting mods, the theory that using your stock MAF and TB will nullify any improvements that the intake itself would make isn't completely true.

This would mean that the MAF and TB on our trucks are already performance at max from the factory which is absolutely irresponsible of any auto manufacturer to do since many of these parts are used on many other makes and models with varying hp differences, the real reason why they would be a hindrance isn't actually because of these particular parts themselves but instead the factory computer tune that governs them and the tolerances that it has programmed in for them.

If you do install a CAI it should ALWAYS be shielded, and have a free flowing exhaust (factory or aftermarket) along with a performance computer tune to tie them together. Otherwise these higher flowing parts will have the factory tune stumbling all over itself and thus you will actually lose power.

Just my 2 cents.
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Last edited by BigRed10287; 08-10-2011 at 11:20 PM.
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  #21  
Old 08-12-2011, 02:17 PM
Nate the Engineer Nate the Engineer is offline
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Default Re: should i get a new intake because of new exhaust?

Simple answer: Yes.

Complex answer: Yes,
and here's why.

Upgrading to a K&N air filter does not increase the amount of air flowing in to the engine; with bigger exhaust system (plus all the other air flow parts) it can and will. The advantage of any aftermarket filter is that is allows the air to move more freely past it.
From what I know about them (my dad's run them in his civic's for years) the K&N filter has less resistance to it then a paper filter, thus you get better performance. It's not much (maybe 5 hp a the most) but every little bit helps.
I don't have any mods on my truck thus far, but upgrading to a K&N (or equivalent) is going to be the first. Probably just cause it's easy to install and relatively cheap.

I'm new and don't want to step on any toes or go against the current, but I have noticed that everybody seems to refer to upgraded intake systems as "Cold Air Intakes" or CAI. The air outside isn't necessarily cold and making it move faster or just forcing more of it doesn't cool the air. Wouldn't you technically need an inter-cooler to call an intake "Cold Air?"
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  #22  
Old 08-12-2011, 02:27 PM
FireRanger FireRanger is offline
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Default Re: should i get a new intake because of new exhaust?

Calling it a CAI is like calling all pain killers tylonol. Our stock intakes are already positioned for fresh outside air. People think they're going to get an increase in power from either the fancy filter or from the larger intake tube. Both of which are false beliefs. If you really think you're going to get 5hp from an air filter, you're living in a dream world.
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  #23  
Old 08-12-2011, 02:38 PM
pooleo pooleo is offline
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Default Re: should i get a new intake because of new exhaust?

I like to think of it as trying to breathe thru a staw. Your lungs will eventually fill up. Now if you breathe without the straw, your lungs fill up faster. In this example the lungs are the stock intake, lungs are how much the heads can take in. I truely hate the term "CAI" free flow intakes are really what they are.

Any claim about the free flow intake sucking hot enige air is horse shit to. Engine bay temp in my expedition at idle on a hot summer day rises to 105* at 70 on the highway, the temp drops to outside air temp and usually lower

Also, ford does not engineer rangers at top drag fuel performance. So this talk about it comes from the factory already at peak is horse shit. Simply port and polishing heads will do alot. Adding a free flow intake and a less restricted exhaust will help. I know, I have done it.

Go for a sprint, after you stop and are sucking wind, try exhailing thru a straw...very difficult. Same with the motor, the quicker air comes in and out, the more power you will get.
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  #24  
Old 08-12-2011, 02:50 PM
Nate the Engineer Nate the Engineer is offline
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Default Re: should i get a new intake because of new exhaust?

Straws are good metaphors for this, but they have a dark side.

Next party you go to bring a bunch of straws and bet on who can last the longest while breathing though one and jumping.

Anyways the 5 hp is a maximum you'll see with the appropriate other upgrades. For a quick and simple test to those who don't have the time or money for a dyno test:
run the engine with no air filter and note how much noise it makes,
drop in the stock filter and the engine noise should change.

Depending on your engine (probably gonna be hard if you got a V8 or a turbo) you should be able to tell a difference at idle. The difference in sound is the added resistance of the filter. Less resistance in the intake and the engine doesn't to work as hard to pull in the air and there's your added power.

Granted I do believe my Dad only runs the K&N so he doesn't have to replace it and you get the fancy noise, but put a big exhaust system on a civic pulling a trailer and you can tell the difference.
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