I apologize... that came off the wrong way . I did not mean to question your integrity.I'm 100 percent feedback on every forum and ebay for 18 years, I don't sell junk.
I'm betting it's the gt350 hat having some restriction at that level.I apologize... that came off the wrong way . I did not mean to question your integrity.
it’s just those Pumps are finicky .
I just tried to run the dual DW 400 in a GT 350 hat /return system after I removed my Fore hat with dual pumps for repair /upgrade .
I had no issues with the Fore hat up to 950 whp
when I swapped to the GT350 hat/Dw400 ‘s I was surprised at the drop in pressure I was seeing above 5500 but when I tested the pumps by pulling fuses it seemed they were both good .
I am not sure that’s the best way to test them but a week later one of them died (so may have been weak to start with and may have caused my issues )
or May be not ... could be the feed line from the GT 350 hat is the restriction.