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I've got a 2005 Ex with a 6.0 that I just had rebuilt. I was wondering how many of you out there are running a different intake than stock? What are you running and what are your results?
Most will say, If you want noise, that's about all it's good for. The factory intake tract is more than capable of flowing what the engine will ever need. There are a few different filter mods that people do. They would be up in the tech folder.
The so called cold air intake pulls heated air from under the hood.
The stock one pulls it from the driver's front side of the core support and
it is a lot cooler than from under the hood. Also the gauze types tend to
cost you a turbo do to the dust that will get past them. Then there is the
oiled ones. They make a mess and also eat the turbo.
Performance air filter and intake assemblies are a hot aftermarket item. In most cases using one simply means more noise, and more dirt going into your engine. At the dealer we have seen many filter systems changed and for the most part it is obvious that these performance filters offer less filtration evidenced by dirt found in the intake system and worn turbocharger compressor fins. Many of these filters require a coating of oil to aid in filtration. This oil gets sucked in with air flowing through the filter and contaminates Mass Airflow Sensors providing an excellent surface for dirt to stick to. In addition, some intake systems cause erratic airflow through the MAF sensor. Either condition can result in performance concerns or a Check Engine light. For most Power Stroke Engines the stock Donaldson filters are the best choice. In cases where the housings have become distorted or have been broken, the best advice is to replace with the original. We do recognize that the 7.3l PSD F-Series trucks had several filter assembly designs all of which had problems with housings breaking or poor sealing. For that we recommend installing a Motorcraft severe duty upgrade that uses the Donaldson filters.
So how accurate is the filter minder? I have absolutely no problem leaving the stock unit in there. Should I run it until the light goes on? Or should I change it prior to the light???
Filter minder is pretty good -- but if you want to be AR about it, pay attention to how much time you spend on dirt/dusty roads and change it every 50K whether the Minder tells you to or not.
BTW, the Chevy guys have the same discussion, over and over as well. They have a stock Donaldson filter which is good to over 500 HP, just like we do. Yet they buy oiled gauze filters thinking they are boosting something other than the size of filter seller's bank account...
Oh and there are the dyno tests...
Get your favorite corrugated oiled filter, take it out on a sunny day and hold it up towards the sun: all those pin-holes of light you see? That is where the free-flow air design is at, and if you can see it, the dust will be there and through instantly...
Spend your money on other things -- my $.02 and yes, I have seen the lights
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