[wrenchhead944]

Ok Here is the story. We replaced the pump because of low pressure . The replacement brought the pressure up but not to spec .
I found the check valve in the return line was not keep the pressure up .
After trial and error I got the pressure up to 15lbs .
The bucking was gone but it still had a 4000 rpm miss.
The Permatune module was bad .
Put a different one one and it runs out good
. Some fine tuning and its up for sale .
Anyone want to buy a Porsche ?