I have a Zex dry kit on my integra, and have had no problems. I'm not a big fan of NX and other wet single fogger kits...I don't like the idea of spraying fuel through my intake and TB. Not to mention the fact that a dry kit allows you to place the nozzle farther away from the TB, allowing for better mixture with the intake charge. Direct port wet kits, however, are another story. If you want an all out nitrous car or to run a big shot, that's the way to go.