ls header swap

[Montecarloman]

Originally Posted by raptor6788

will there be any plus in performance then

It wasn't a night and day difference but the engine did seem to run better and definatly runs better during highway passing situations.

[nramlow2006]

Originally Posted by Montecarloman

It wasn't a night and day difference but the engine did seem to run better and definatly runs better during highway passing situations.

but if your running a 07-08 ls you already have the ss/sc header. your best bet is a after market 4into 1

[BlackBalt]

Originally Posted by gibsonj4

You also have to decide if you want a 4-1 or a 4-2-1 header. Different airflows and different results at different RPMs. Here is something I wrote up a while ago.

There are a large number of companies that sell exaust for the 2.4, 2.2, and 2.0L trim levels. Borla, Flowmaster, and Pacesetter are just several examples. Now, you can buy a catback system that usually includes piping, a muffler, and a cat.

A catback system is just that, from the catalytic converter back to the rear bumper. It doesn't include replacing the catalyst, that would require a downpipe and possible manifold swap depending on your setup.