I had a Magna 275 on my Duster, and had zero problems with it. Last year I switched up to a Magna 500 and had zero issues with that one. I was just too close to the limit I think on the 275 that it was time to update when a good used 500 came up I couldn't turn down. You have to have a good regulator with one of these....No cheap ones. Its a lot of pressure to hold back. My other fav is the A1000, I love those things. Great pump with great versatility.