slant fuel injection opinions

well its been over a year with the FiTech. still running great, actually have been driving it as my daily this week ( wife's van is busted Again... ) cruises great!!!
exhaust had a terrible drone, checked the plugs the other day and they had some carbon speckling so I pulled the timing back a few degrees. drone is Much better now! buzzes along at 3000ish doing 70. even higher if I try and keep up with traffic. I think some taller rear tires are in the cars future.