There were two threads.
http://www.powerstroke.org/forum/gen...er-update.html
http://www.powerstroke.org/forum/gen...-impeller.html
I've data logged 4 times with the stock pump and 4 times with BPD waterpump. When I compared the ECT before and after the BPD, 3 out of the 4 readings with the BPD showed the ECT was reaching operating temp faster with in the first 6 minutes of driving. I have put the AE data log into a spreadsheet, just need to figure out how to get it onto the forums for others to see. IIRC, the delta between the stock and BPD ECT with in the first 6 minutes was 20*ish to 40*ish.