I make 610hp on my street truck with our 190cc injectors, II 66,BD diverter valve and colt cams camshaft and Innovative tunes. Unfortunately since I put the diverter valve in I've bent rods in three engines. My tow rig gets punished at 500 all day and has no issues. I will say that I have about 10,000 dollars in junk new injectors from some so called great shops and didn't make squat until we made our own so make sure you do your homework before you spend a lot of money on someones 225cc injectors that only make 500hp.