ZZP Stainless Headers Downpipe Exit:2.5 Inch Exit Comes in two options: If

Comes in two options: If you are running a stock crank pulley you'll want the "stock" option

If you have to send back your PCM because of an issue

Example would be if you are going 50mph in 4th

COBALT (2005 - 2010)

5 turns if you have stock lifters or 3/8 turn to 1/2 turn if you have Comp or LS7 lifters

ZZP Stainless Headers Downpipe Exit:2.5 Inch Exit Comes in two options: IfWhen you install our ZZP stainless headers, this is the specific downpipe you will need to complete your install. It has a leak free V Band inlet flange that will mate directly to the exit of the ZZP headers. On our catted downpipes we use a 200 cell unit which is the highest flowing best performing cat we offer. This downpipe will ONLY bolt up to version 2 ZZP stainless headers with the V Band exit flange. It will NOT bolt up to a stock rear exhaust