Originally Posted by cooltoy

The high flow cats are FI, but the are not part of the exhaust. It's a separate item.

The other part is not FI. It is not the full exhaust. I think they are called short tails (made by several manufactures) and are meant to replace the muffler section of the stock exhaust. I think the combination of short tails and FI HFC would make for a pretty loud set up.

FI exhaust is a cat-back exhaust (everything from cats back). It should include a mid-pipe (with various size resonators), muffler cans and the tips.



I recommend you do some research in the exhaust section.