I wanted some input on upgrading Exhaust. I'm considering investing in Headers and cat-less mid-pipes for the L. I've already got the Magi cat-back, but didn't know if upgrading the stock "bottle-neck" manifolds would help that much. Can anyone give input on power increases from this mod?

 

You won't see a power increase unless you are putting down at least 450rwhp.

 

Here's a hint. The 4 converters on our trucks are the restriction.

 

EXACTLY

 

How much power are you making now?