Tiptronics and NO2 refill

Just 2 quick questions: what are tiptronics and how much does it usually take to fill a No2 bottle by the pound... or what ever it is measured in.

THX

tip tronic is like a manual trans wihtout a clutch. it shifts a lot slower than a manual though. not quite a sequential shifter a lot of the pro rally guys use, butt good enough for people who dont really like driving stick full time but want the ability to be able to choose what gear there in.

i'm not sure how much it costs for a refill on a n2o bottle.

NO2 is about..hmm...2-3$ the lb!! prety expensive but good if u race times to times in downtown when a showoff is near you showing u his ugly pipe and p-flow(only mods he proly has) then ur NOS will shut his mouth hehe!

Im sorry to say but wrong section bro....try again