Originally Posted by Gene Culley

Yes the headers are all interchangable, but there is no benefit in doing so unless you use the LSJ. Just as a reminder, there are problems with the LSJ header and DP on an automatic. Also the LSJ header and dp have to be used together.

As I'm doing my supercharger build I found out why. The LSJ header is shorter than the stock and the LSJ DP is longer than stock (to make up for the shortness), so that is why they are used together.

Actually, for the LAP engine, they do have the 08 and up LE5 intake manifold. That is where the extra HP came in 09 for the 2.2.

Originally Posted by p1llar

Very imformational post, thank you.

I'm just curious why you would say there is no benefit replacing our header with an aftermarket one, only the LSJ.

Originally Posted by 07Maliboo

he meant any other stock header. ha ha. and I can't wait to put mine on.

Originally Posted by Gene Culley

^he is correct. Of course larger aftermarket is going to be nice, but none of the others are going to give you a performance increase other than the LSJ. That is all I was saying

Originally Posted by 07Maliboo

Don't buy ebay crap ! ha ha. most likely you'll throw a cel. just get the injen cai. I love mine so much i bought it for my malibu and now it's on my balt, best damn intake I've ever had. no codes, and you can actually feel the difference.