ok found out it may be a bad case of Valve float the car just stops making power at 4200 and then breaks up past that but if I rev it slowlyit isnt nearly as bad as if I get on the throttle hard so thinking its valve float, old explorer springs anyway so am changing them this weekend. Bought the TrickFlow kit seemed the best deal for a good product. was told by summit that the trickflows and FMS ones are about the same but the crane and FMS ones are the same, so I bought what they had in stock and hoped for the best. oh well specs looked good 110-120 seat pressure correct installed height and lift weight. so we'll see,hopefully I will be ready for the track in a little while(doing Nytrous if this fixes the problem) also did shocks in rear so hopefully 60ft time will drop too man am I tired of 2 sec+ 60ft times not used to it,putting gear in soon so that will help in a big way. 2.1 60's arent that bad with a 3.27 and shocks that wont hold pressure.I guess, but hopefully I can get brakes done this week so I can hold for a better burnout too.