Pontiac G8 2008-2010 - P0420/430 Help me Obi Wan Patick G




rlwjr1
06-23-2011, 02:08 PM
I just installed my Kooks LTH w/cats. !5 minutes into driving home my CEL comes on, P0420/430. Cleared the codes, came back 30 minutes later.

Searching over on the other site it seems like a common problem when installing HFC. It also seemed to be the general consensus that a custom tune was the fix.

Seeing as how I was going to have you, Patrick, tune it anyway, is this something that can be fixed with a custom tune??? I need a State Inspection in July :usa:


Patrick G
06-23-2011, 03:11 PM
Absolutely this can be addressed with a custom tune. Hope to see you soon.

2002_Z28_Six_Speed
06-23-2011, 04:14 PM
I vote tune by Patrick. It will fix more than those codes.