oh well, what do u know there are, haha. Oh well, I got my injen off some kid that crashed his s14 for cheap, so I ain't complainin...

 

mine is from ebay is 2.5" but I bought 2 of them afraid it wouldn't fit and I was right. The second one is a 3" but it doesn't fit on a S14 1995 it fits but the hood won't close so...
Anyway I felt some of my horses unchained and runing freelly but still felling some dip when in very low rpm's. I am pretty sure after all this discussion that is because I am sucking more than blowing as I still have stock exhaust.