I did a baseline with Vortech-supplied filter, fully-ported MAF, and a 3.5" hard intake pipe: 12 psi boost (It's 80 deg today - it will normally do 13 psi).

I relocated the MAF to downstream of the intercooler: 12 psi.

I removed the filter: 12.5 psi.

I removed the whole hard inlet pipe: 14 psi.

So. . . most of the restriction is in the 3.5" hard intake pipe???

Mike

 

I find it interesting to note that my eaton setup picked up 2psi after the blower from a 3 inch mandrel bent pipe to a 3.5.

Prehaps the vortech will like a 4-5 inch inlet?

 

I think you're right, but good luck fitting it. . .

 

http://stahlheaders.com/Frame%20Tubing.htm

I've got a 5 inch opening K&N filter off a AH-64 apache.. they use it for the A/C

 

I remember from "Maximum Boost" by Corky Bell, he recommends putting a vacuum guage in front of the compressor inlet, and take it out for a WOT run. Then using Inlet Tract Flow Loss = Standard Baro Pressure / Standard Baro Pressure - Loss Through Filter.

So if you get, for example, 3 inches of vacuum at maximum load with standard baro pressure of 30 inches, you get an 11% loss before the compressor inlet. Anytime the inlet flow suffers, the compressor will have to work harder and heat will go up.

I would assume zero loss is near impossible to achieve, but at least you can quantify which inlet pipe is best using his idea.

 

With the MAF moved did you see a drop in your AIT from not having to recycle the air? I have this Idea about doing it like that and droping the temps down.

 

I didn't read the IAT's, but I think the advantage would be very short-lived once you hit the gas and the hot air is quickly consumed.

 

Revision: I checked it today with everything back in the normal location for comparison and it showed 12.5 psi. Is it possible that relocating the MAF up top reduces boost by .5 psi???