Hi guys, this post is being made out of desperation as I'm really not sure what to check next. Also I'm new to the forum so I'll do my best to link everything correctly.
As a breif backstory, back in august I did a "top swap" on my 3800 SII in favor of a ported aluminum upper manifold and throttle body. Also the throttle body is an L67 with the gen V adapter to connect to the manifold and a custom CAI system was made.
Other than this mod all others are bolt ons such as the front power log and DP which shouldn't affect the engines core function.
The real issue here is knock. Ever since the swap the engine is mostly down on power feeling sluggish as if lean and knock is all over the place. I have tried MAF tuning and adjusting about every variable possible to no avail.
Here is the link to my most recent log. Note that at one point I commanded open loop to see what would happen so some data may get weird. 2004 Pontiac Bonnevile SE (16th UMass Drive).hpl
Also heres an image of the mods showing the intake and the catch can which I forgot to mention.04 Pont Top Swap.jpg
Finally my suspicion is a bad maf tune or failing front O2 causing it to be lean, I thought LTFTs were supposted to iron out fueling errors so my only last suspicion is the O2.