It doesn't matter as long as there is enough flow at the higher pressure and it's not so crazy that it overflows the stock return. I just know that the TPI pump works well and it's cheap. I plugged some specs in to a calculator online and came up with 20psi to support 300hp at 80%DC. I would think 18-20 would be the range you're looking for. I got an adapter from cfmtech for the fuel inlet fitting for a cheap gauge from Summit as you can see in the pic.
Bookmarks