My 2000 Tundra V-8 is stating to show signs of needing a professional fuel system cleaning...injector noise when accelerating, sluggish performance, and poor fuel economy. It has 130K miles. For the most part, I have used only Techron fuel system cleaner, but found it to be minimal in effectiveness and a possible cause for high Pb readings on UOA's. So now I am considering the Valvoline 3 step FI process for $65, or the BG 3 step process for around $120(?). Does anyone have any experience with these products or know how good they are? Safe? Thanks.