But no one has ever replied to this thread just say AWESOME! This data is priceless. It demonstrates that I can get the same as 10 pumps with only 6. Personnaly I think the ultimate pumper mod would be a two or three pump requirement to get 800-900 psi and thats it. No more pumps required and if it maxed out at that psi then it would be safe as well. I have to say thanks for sharing this and even taking the time to do it. To me, simply amazing and invaluable info.