I went to a local car meet this weekend and a guy I talk to regularly has a Blown 5.4 (not a L) and he had a Methenol injection going on. He had a real cheap setup. He used a Autozone universal water tank, a small electric pump, and a NOS jet to spray rigth after the MAF. He is going to rig up this kit for me and another buddy of mine with a L. He said it works like running in minus 30 weather. I wasnt there personally to see it but they said he turned it on and sprayed it while he was parked and his blower was ICE COLD. He is just running straight methenol and he has a NOS switch to turn on the pump when WOT. It was a real need setup. Im thinking of going this way myself because the heat and humitidy in Texas suck.