Some like it, some don't. Don't ask what kit because then it's a pissing match. I have snow performance MPG max and like it. It takes a bit to get it to work right with your truck but it's worth it. Search for it and there will be a few threads on it. I run water/meth (-30 washer fluid) in the winter and straight water in the summer and I always see some EGT decrease in the truck. I went with a larger nozzle at first but then had to back down, and adjusting the boost on and off levels is the key to getting the most out of it.
I also find that different tunes react differently with it like my toe tune it comes on too soon and it actually makes the engine misfire so I just increased the boost level in which it turns on and that solves it but my performance tunes they can deal with it coming on at six PSI and then hitting the Max or second stage at like 18 psi.
