Hey, so I need to ask for help since I keep trying things and not making much progress I want to make my daily driver a stable running modded LGT. I've been having some drivability issues since I pulled my intake manifold to replace the gaskets and address some vacuum leak issues I was facing previously. Now, I can't seem to get it to stop having misfire codes and I'm trying not to keep shotgunning parts to fix it. Below are the details, I'm sure I'm leaving a lot out but this is a start. 05 Legacy GT Auto, 202k miles Stage 2 - K&N drop in, cobb catless up-pipe, cobb catted downpipe, borla catback, perrin tmic Cobb Accessport, previously stage 2 tune, i've changed to the stage 1 for troubleshooting New Autolite iridium spark plugs gapped to .030 As stated above, I had been chasing boost leak issues previously (I was seeing a max of 11-12psi on my AP) that led to me trying new intake gaskets. Recently I pulled the intake manifold, replaced all gaskets on the upper and lower, throttle body, ended up replacing multiple vacuum hoses and egr / pcv hoses due to being old and cracked. I did a pretty thorough inspection of the turbo inlet thinking there may be a crack but it looks fine so I reused. I had a vacuum leak on reassembly from the fuel injector seal (on the driver side rail) , I aligned those better and that seemed to help. Following the intake gasket replacement and once I tightened up the injector seal issue, I went from low boost to high boost and started getting misfire codes. The car never had misfire issues previously and ran well, now AP is showing peak boost hitting 17 and even 20 a couple of times and CEL pops, with misfire on cyl 2. I have a spare set of coil packs and have tried swapping out but that didn't help. I just got in a new set of iridium plugs to replace my 2 month old iridiums and made sure gap was correct and still get these misfires now. I am all for doing work and testing issues but I am just not sure where to look currently, I've been searching the LGT forums and tried a lot of ideas but would love to actually talk to someone who could help look at it. I've got cold beer, 2 heated garages and a lot of resources. Let me know if you have ideas or if you would come take a look with me.