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MAF sensor & CAI

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Old 03-04-2009, 01:47 PM   #1
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MAF sensor & CAI

ok, so I think I'm going to get either the TRD or aFe CAI, they seem about the same... close prices too.
Anyways, I was thinking I need a MAF sensor programmer to really use the new intake. Looking at the URD one.
Anyone running this kind of setup?
I figure since I talked myself out of quite a few exterior mods I can use the $ for the programmer. I've read some bad things about using a CAI and not programming your MAF sensor. And If I do get the URD programmer, how hard is it to use?
thanx
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Old 03-04-2009, 01:52 PM   #2
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I left my programmer in the stock configuration which was mapped for the URD intake. You might be able to have gadget from URD tune your truck.
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Old 03-04-2009, 02:01 PM   #3
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Save your money! Use the stock CAI that came in the truck.


The OEM intake it came with is (in most cases) going to be the best - sounds crazy but here's the real deal -

The reasons anyone makes a "cold air intake" are:
1) To sell you something that "looks cool" and makes noise (keywords - sell you something).
2) Because "Fast & Furious" was just such a cool movie and "you gotta be like them, dawg".
3) You'll think your ride is that much better than the next one just like it (they made thousands of em).

Now back to the real deal -

Most "cold air intakes" are misleading to begin with. If the filter is an open element (you can see the filter) and it's under the hood, it is actually a "hot air intake" (in other words - they lie and sell you something). When was the last time you ever felt a cool breeze under the hood of a car/ truck? A true cold air intake has to take in air from an ambient source - aka outside the engine bay. If you want one that bad for the "cool factor", or if your car/ truck doesn't breathe from outside the engine bay, find one that fits that description.

The air that the OEM (the one it came with from the factory, or Original Equipment Manufactured) air intake breathes in is usually from just behind the grille itself, or sometimes from a fenderwell. This "air charge" is actually cold (or ambient temperature air), as hot air will just drop your ignition timing (because of pre-ignition or detonation) as the temperature of the intake air increases, and take all your HP with it.

Let common sense help some on deciding just how good an aftermarket part or system is:
1) Why would the Manufacturer short you on the performance it could have for an extra $100?
2) If you gained MPG with a simple piece of tubing and a "one size fits all" air filter element - wouldn't they do that at the factory that built the vehicle?
3) Who do you think has more money and resources for Research and Development - the company that designed and built the entire vehicle, or the company that made that "cold air intake"?
4) If something you could buy and install yourself would actually add HorsePower and MPG, why would any vehicle manufacturer waste millions designing it the way they did (and lose the edge on the competition)?

Add to that the water protection that a stock OEM air box is designed to provide. Water intrusion is a HUGE concern to prevent damage, and here's the reason, air compresses and water doesn't. If an engine breathes in water, and tries to compress it, it will break in a big way.

Some "cold air intake" kits have a water intrusion valve that is basically a ping-pong ball in a sleeve - good luck trusting an engine to that. I know where they got the R&D on that design, just open up a wet/ dry shopvac and you'll see the same thing. Amazing how brilliant these things are when you dig.
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Old 03-04-2009, 02:32 PM   #4
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I get ya about the R&D stuff, and of course the more I read the more after market stuff I decide against.I'm sure some of the companies that "specialize" in one field or another (intake, shocks, etc..) have some kinda edge over toyota, look at their race trucks. That's why I asked about the programmer. Just looking to see how it runs from people that may have it installed.
So, If I did decide to get the intake and programmer I would get maybe 10 HP gain at most? And who knows if it will be bad for the engine? If it can get air/fuel mix correct then im seriously considering it.. and yeah Ill probly get some new exhaust as well.
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Old 03-04-2009, 02:36 PM   #5
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am i messing up my engine by using an airaid intake and not reprogramming my ecu?
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