Chevy Silverado and GMC Sierra Forum banner
1 - 1 of 6 Posts

· Registered
Joined
·
1,540 Posts
Look at LPP headers. I was extremely pleased with mine and they came with a catless y-pipe. It cost me $300 to have them installed, but that included fixing a couple broken manifold bolts in the heads. You can always have some highflow cats welded in, however you will most likely still get the P0420/430 codes and will need to have the downstream O2 sensors turned off via tune.
 
1 - 1 of 6 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top