Ive done some serious searching and written down a bunch of part numbers- but what I havent read explicitly is that the bhaf does anything for general mpg.

So does it?

Thanks!

http://www.discountfleetsupply.com/filters-air-filters.html

 

42790 - $41.47

http://www.discountfleetsupply.com/wix42790.html

 

46637 - $30.67

http://www.discountfleetsupply.com/wix46637.html

Edited January 24, 201411 yr by GSP7

AGPTurbo, I bought my Fleet Guard BHAF off of Amazon for $45.00!! 

There is something not correct with his data, it's doesn't make any logical sense.

 

Nearly all of the air going into the engine bay crosses the intercooler, a/c condenser and radiator, it's then heated by the 200° block, 1000°+ exhaust manifold, and 400°+ charge air pipe. A BHAF pulls nearly all of it's air from that same engine bay, a small amount comes from the hole in the fender.

 

How are you only going to see a +20° rise? It's not going to happen, that's how.

 

With my sealed box, pulling air from only outside the engine bay I see a 15° rise over ambient 4" after the filter when pulling a grade. With a temp probe on the outside of the box it is 125° over ambient, and that is believable 20° is not.

 

 

 

We went over this before.  I have nothing up front, no batteries, no overflow or washer tanks.  I have nothing.  The air free flows through.  Sitting at a stoplight it would skyrocket.  

We went over this before. I have nothing up front, no batteries, no overflow or washer tanks. I have nothing. The air free flows through. Sitting at a stoplight it would skyrocket.

That's right, and that will also effect your moving temps. It's also why your data is not relevant for a truck with all their underhood stuff.

You start driving that thing again?

That's right, and that will also effect your moving temps. It's also why your data is not relevant for a truck with all their underhood stuff.

You start driving that thing again?

 

Then say that before saying I don't make any logical sense.  

 

No I haven't even started it in a year.  I'm just gonna sell it, I have no use for it.  

I honestly just forgot you had gutted the underhood, which in retrospect makes perfect sense. So, for a truck like Michael's the results would be different and probably closer to what I have seen.

I'm trying to get my hands on a spare thermometer for this purpose. I don't think I'll see you level of temps ever either. IAT always follow the +40*F rule. I can tell the outside temp by just looking at the IAT which is always close to +40*F rule. The only time this doesn't apply is when the engine is cold then the IAT matches outside temp.

My IATs vary based on ambient and load, but empty they are generally +6, but as we have said the sender location has a lot to do with it.

With an intercooler and the location of your MAP sensor I am not sure you would see it on the IAT, the +40 without a load shows how much the coolant effects the reading and probably why they moved it on 3rd gen trucks.

I cannot think of anything that would change the temp, and I wouldn't be shocked if it was higher simply because there is more downpipe and the turbine is much higher and further forward on a 2nd gen vs 3rd gen.

Like I mentioned before nearly all of the air entering the bay goes over a hot radiator, intercooler, condenser and then is heated by the block, charge air pipe, and exhaust.

I've never seen the template for the heat shield.

Joe , it's in the articles section, 24v. Also someone just put the link in an earlier post

Ap