Thread: New owner of 2006 Grand Prix GT!!! *pics*

Originally Posted by HVACgtp

No I u Ben for the 04+, and yes, from what I have been told, since I asked the same questions is yes it will throw a code, I'm doing the exact same maint before mod stuff to my car, just wait and do headers, the speed daddy's I'm getting are only 220 off eBay, the come with a catless down pipe!

From everything I remember from back in the 3800 days. eBay and SD headers were garbage.... Maybe things changed? Or maybe that was just on my bonneville ssei. ?? So if Thera no u bend where is the most restrictive part of this car and why are ppl still getting knock on a 3.6?