Nice... I would like to see the same test done with a 3" coldpipe to see the difference. I mean if upping the boost a hair will cure the lag time that it takes to fill the extra space on a bigger pipe and you can flow more air with a 3"...(I'm contradicting my first post. Scratch that.)

How much horsepower are you running and what is your boost pressure?

I am only looking for 220hp or so now but down the road no more than 300hp (I know, I know, that's what they always say )

To keep my current turbo in its efficiency range I need to run at least 8 - 10 psi. Based on that information, will 2.5" suite me or is 3" still the route to go.

Oh, can a 3" pipe be wedged between the battery and fan shroud on an S14? Or should I relocate the battery to run pipe down the hole near the battery so there are less bends in the pipe (or less of a radius I should say?)

Thanks guys,
Tyler