Rick another note:: When you get a dyno tune with one of these air boxes on, it doesn't simulate real world. Your motor will tend to run a little rich till the ram air affect comes into play and actually lean out the mixture causing you to produce more HP than the dyno sheet shows. The reviews are mixed from what I hear..

 

Ive always been confused about the "ram air effect" leaning out the mixture...

The air is going thru the MAF and into the supercharger - Its not slipping past the super charger in to the cylinders. So unless you are overwhelming the maf or the tune is bad, how can it lean the engine ?

 

The same way adding a blower pulley does. I guess the tune can only correct so much? But think about just about any mod you do, your still pulling the air through the MAF, so it should correct itself. That is why some people claim you don't need a tune for pullies or other mods.

 

In areas that sand the roads I would not run a low air pickup tube. There will be particles too small to filter and it will destroy the cylinder wall finish in short order.
Jim

 

The often referred to "ram air" effect (which is when the air being forced in from your air intake, "exceeds" the volume of air being drawn in from your engine through your intake system - and therefore becomes a "positive pressure" before your intake system, in essence, you're "forcing" more air into your air intake than the engine is currently normally drawing in, normally aspirated or supercharged) from an air intake located in front of your vehicle doesn't generally occur until around 180 mph+. So although some "leaning" of a a/f ratio for some reason may take place after an aftermarket "air box system" (and other an incorrect installation and/or part failure, such as MAF meter failure during installation, etc, I'm not sure why it would happen) unless your L is topping 180mph+ - any possible leaning out of the a/f ratio is not likely to be coming from any so called "ram air" effect.

 

Not sure what he said but I think I agree..

 

I'm pretty sure Huff's experience is with a non-MAF truck.

 

Thats not true at all. Just becuase you aren't seeing positive gage pressue (PSIG) doesn't mean it doesn't raise your absolute pressure (PSIA) Say at WOT from 60mph your intake (before supercharger) see's 5psia (less than atmospheric) with a "ram air" you may see 10psia. Still less than atmospheric, but a more dense air charge non the less. These numbers are totally random, I have no idea how much it acutallly adds at a given MPH, but you will see some increase in air charge. And more air means you can add more fuel, means more power. How much? That I don't know.