I have the stage 3 Jammer nozzles (100hp) in my truck and they work good for me. With my drag comp. on 1/5 there is just a little smoke at wot but when I put it on 5/5 wot , there's a large cloud of black smoke :-laf .
For the money I thought it was a good buy. I even got the injectors hop tested and all hop perfectly. They worked as advertized. I dynoed 400 even with the tips and the drag comp.
Dan