what does "ti" stand for?
 

What is the difference from 318ti and 318i? Why does 318ti has more HP than 318i?

If you want to know what ti stands for use the search function. This was discussed already,there is a recent thread on this cause somebody asked the same question last week. I don't mean to sound rude but this has been discussed.

Edit: Here is the thread from last week.
http://www.318ti.org/forum/showthrea...ighlight=stand
Inside this thread is a link to the original thread.

Touring International, don't worry about asking. Looks like you're fairly new to the side, good to have you on board!

Atleast try searching for it before posting,a majority of the topics have been already discussed on here.

I agree. No sense in having another.