I was looking on ebay to get an intake but i dont know which one it better for eclipse.
Short would be good because it can get air faster but longer could be better because it goes down to the grill, which i think would get good amount of air because it by grill.

So please help me out here.

Here are few intake that i was looking at.
http://cgi.ebay.com/ebaymotors/Mitsu...3286.m14.l1318

http://cgi.ebay.com/ebaymotors/95-99...3286.m14.l1318

http://cgi.ebay.com/ebaymotors/95-99...3286.m14.l1318

http://cgi.ebay.com/ebaymotors/Mitsu...3286.m14.l1318

 

The best is variable (rpm/engine load dependent). It's been said many times in this forum - DO NOT BUY STUFF FROM EBAY. Instead I'd recommend going to some trustworthy specialized places either online or else.

 

On the other hand. you want to get the coldest airinto your cylinders, so I would vote for the long one that takes air from the side ofthe front grill.

 

Well i wouldnt go with a ram intake, It will throw your IAt sensor codes all to whack Low and high input