What are you thought's on Prototype Racing stack vs BPi stack?

I plan on using one of these with a AEM Dryflow filter.

don't know which one to choose... any dyno's between the two?

 

i perfer the bpi strong lightwight great design check out the dyno results on his home page


http://www.bpinitiatives.com

 

bpi hand down

 

i have design one my self.
want to see any pics?

 

has anyone tried a velocity stack in conjunction with the comptech icebox?

 

look for my answer in the other thread

 

mathematically your lowest entrance loss coefficient will occur when the radius of curvature of the inlet divided by the inside diameter is greater than 0.25

r/D <= 0.25

3" ID---> needs a 0.75" radiused entry

after that it will still help, but not too much.

this helps the fluid to not separate from the surface when travelling along it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dfoxengr &raquo;</TD></TR><TR><TD CLASS="quote">
this helps the fluid to not separate from the surface when travelling along it.</TD></TR></TABLE>

you mean air? right?

 

yes air is a fluid

 

do they make anything for the ported s housing?

 

circuit hero just came out with a new air horn for those of you interested, it makes proven dyno HP. this same design netted about 10HP in conjunction with a 3inch short ram on our circuit hero Type R some time back..

http://www.circuithero.com/products.html