Right on.
The BI prime will resist more because of
a) it's a quad pass (versus 2)
b) it has 3/8 barbs, versus 1/2
But it will work. It seems wasteful though.
I'm missing something here... Does the current setup have the BIX or the BI prime?
If the current setup is with the BIX, then adding a BI prime, in parallel, would have little to no effect, as most of the heat would still come out of the BIX.
If the current setup is with the BI prime, then adding a BIX in parallel would cause most of the flow to go through the BIX, where most of the heat would be dissipated.
In either case, adding another rad in series, would restrict the overall flow, which would cause everything to perform a bit less. I think...
