Quote Originally Posted by DanDaMan View Post
Attachment 12948my DF will do 80 , when the air temp is 45 degree's or so , and struggles to do 70 when its over 100 degree's , so yes temperature of intake air indeed makes a difference

negligable indeed , only a 12-15% speed increase from running colder air , but its the diff from cruising a highway and having to take the access road

I shift into 5th at about 68 indicated my ratio says I should float my valves at 85 , but I cant get but a hair over 80 in perfect yet very cold conditions

bob r u running stock sprocket ? that will make u top out at about 50-55 when your valves start to float making u unable to go faster
Nope. 35 rear sprocket. My ride weight is 140 pounds. Possibly once I adjust the valves and cap off the air injection it will drive better. 4th gear full throttle flat ground maybe 46mph then i shift to 5th and keep it pegged ill hit 50 if its flat. Going down a hill i hit 55 and then my hose on the air injector exploded again