What will a filter change do?
Changing your old dirty air filter to a new air filter will allow more airflow. The dirty air filter is restricted by debry that was sucked into it.
The filter kit you looked at for $12.00 is pretty much junk. It will work as well as one of those fuel saver magnet things you buy from ebay for $20. All a scam for suckers.
As someone else said. K&N intake would be the way to go, but its gonna cost money for that! a couple hundred about. Real performance upgrades cost money.
Even a K&N filter in the stock air intake assembly will work better then that el-cheapo on ebay.. Wait lets rephrase that a dirty K&N filter would outperform the ebay one.
Ill give you an explanation on why that $12.00 filter on ebay is junk too, and why its worse then factory.
1) the factory air filter sucks air in from a vent that is in the front of the vehicle, this is where your going to get the freshest coolest air.
2) Your ebay special cone filter bypasses the factory air induction setup, meaning that this after market filter is sucking up air from your engine compartment. Why is this bad? because you engine gets hot, and runs around 200 degrees, so under your closed hood is going to be ruffly 150degrees, this air filter is going to suck up that hot air. The colder your engine and engine compartment is, the better your truck is gonna run and have a slight notice in performance when its cold vs being hot.
3) The K&N filter kit is simular to the cone setup, but it seperates the engine compartment from the air intake allowing for the cooler air from outside the vehicle to be used.
Here is the K&N filter setup.
http://store.summitracing.com/partd...-63-3058&N=700+400171+318169+115&autoview=sku