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Old 12-08-2011, 05:35 PM   #11
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Thanks for all the replies, I wasn't really looking to upgrade but came across an article about cold air intakes and what they could do! I guess I'll save my money and plan for another job!
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Old 12-08-2011, 11:15 PM   #12
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With all the pressure to up the fuel economy in vehicles wouldn't the automakers put them in at the factory if these filters did what they say?
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Old 12-09-2011, 07:48 AM   #13
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I buy thier drop ins for every vehicle I own. Not because of the inflated HP claims but because of them being reusable. There maybe some HP that can be freed but probably nothing you can feel with your butt dyno. As far as the mpg-hp debate you can raise both, sometimes significantly by increasing how efficient the engine moves air in and out. CARB compliance is pretty strict which prevents the OEM from using products available in the aftermarket. In the deisel world the gains in hp-tq-mpgs can be huge with tuning. I gained 2 mpgs (hand calculated) with a 50hp-150lbft chip which is very noticeable on the butt dyno
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Old 12-09-2011, 09:34 AM   #14
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I had the air filter replaced during my last oil change and I swear my mileage dropped by 2 mpg.
I figured the shop used a bargain basement air filter that was too restrictive and therefore left the hemi starving for air. To test my theory I pulled the air cleaner out and left the air box open while traveling between campgrounds, about 200 miles. My results.... no change in mileage. I was bummed.
I was thinking about going with the K&N or similar product but I don't see the point now.
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Old 12-09-2011, 03:10 PM   #15
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If you google Cold Air Intake TEST you will find that the stock Filter on MOST vehicles is the best. At least thats what the test showed for most GM trucks.
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Old 12-09-2011, 06:55 PM   #16
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I have done four seperate mods to my TV for a little added HP and torque. Each one was done one at a time (except the last two), results are as follows:

1) Amsoil performance air filter (dry re-usable, not oiled like K&N, these are my preference for a re-usable filter)
result-no change in butt dyno HP or mileage
2) Airaid modular intake tube
result-no change in butt dyno HP or mileage
3) Predator Tuner
4) Flowmaster Big Block 70 exhaust
result- .2 MPG increase on average over daily driving and a big difference in the butt dyno HP and torque when towing the trailer although this is at a cost of .5 MPG average when towing (may be because I now run a little faster on average)

Summary: As stated before just changing you air filter alone will probably not have much effect on the performance of your powerplant, you must alter the air intake as well as the outake (exhaust) and more than likely will need a tune as well.
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Old 12-10-2011, 08:37 PM   #17
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Quote:
Originally Posted by Stevea1956 View Post
To test my theory I pulled the air cleaner out and left the air box open while traveling between campgrounds, about 200 miles. My results.... no change in mileage.
That's pretty risky to the engine, about like sticking your hand in a behive without any protection for 2 hours, hoping you won't get stung.
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Old 01-02-2012, 05:57 PM   #18
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i am selling my K & N cold air intake filter
it fits 2003 thru 2008 dodge ram 1500, 2500, 3500, with the 5.7l Hemi
the wife says its to load ( like a race car ) i paid $265. 1st. of november i drove it apx. 400 mile in dry weather so its like new, i have it posted here for $200.00

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Old 01-23-2012, 10:56 AM   #19
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I put one on a 97 f150. No noticeable power or mileage increase. It does rev about 400 rpm higher before shifting though. I changed mine because the stock filter setup was a pain to take out and clean. One draw back now is that there is much less vacuum for the vents. So when I have the vents on and I press the gas, it defaults to defrost. Not great when its smoking hot outside.
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Old 01-23-2012, 11:02 AM   #20
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Originally Posted by saskrick View Post
I put one on a 97 f150. No noticeable power or mileage increase. It does rev about 400 rpm higher before shifting though. I changed mine because the stock filter setup was a pain to take out and clean. One draw back now is that there is much less vacuum for the vents. So when I have the vents on and I press the gas, it defaults to defrost. Not great when its smoking hot outside.
If it's going to defrost at wide open throttle, you have a vacuum leak or the vacuum check valve is bad.
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