[Jgore]

I recently did a build on my 2017 Camaro 2SS. I have CAI, 95mm TB, MSD Manifold, CNC Ported LT1 Heads, BTR 225 Cam Kit (pushrods, springs, trunnions, valley cover, VVT limiter etc) 2” kooks headers, MBRP Catback. After the install it started right up (I replaced spark plugs with the build) got it tuned and made great power. I have an exhaust leak at the header gaskets. (I used Kooks gaskets) tried BTR gaskets and is still leaking and heard that OEM is the way to go. Which would explain my CEL for P2099 P2097 lean in bank one and bank 2. I’m going to try and figure that out. Along with those codes I have P0300 engine misfire detected and P0011, Intake camshaft position performance. I spoke with my tuner (renowned performance shop and tuner around where I live) and he said that those are permanent and aren’t triggering the CEL but they show up with the other codes. He said that those were turned off while tuning and aren’t real. Any ideas on what’s going on? Does this sound right or am I paranoid for no reason?