there's no warranty regardless, it's a turbo kit, the high under hood temps, excessive wear, etc. all void any ford warranty and I've YET to hear of a company that warrants a kit for turbo's. . .but, it's all in the name of fwhp!!! I'd totally slap one on a low compression 3L swap, if I had another car to drive (because problems would persist) and if I had the money.