Quote:
Originally Posted by suspectnumber961
So with a 03 Ford Zetec engine...considering the just about even cold air/warm air tests...I'd be better off just removing the whole air intake tube and installing an OEM style K&N filter to reduce pumping losses from intake restriction?
Some claim mpg gains from the K&N OEM style and less tubing for the air to run thru can't hurt....would be drawing warmer air from under the hood though....
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You can remove the pre filter piping and add in something custom to draw air from out side the engine compartment, using ABS tubing, or flexible tubing of some sort pending the side and shape currently used.
I've used flexible tubing for air ducts previously and it has worked well, just need to seal it (tape) to the current piping, if you can cut the current piping that will work too. The main thing is to have the pipe inlet front facing. IF you could get a velocity stack on the end of it you would be set but that might cost you$.