Looking for help/advice in diagnosing my no boost/ stutter, and yes I did read many forms before posting this. Some history on my car a4 1.8t amb stg 1 unitronic tune, stg 2 south bend clutch light weight flywheel, silicone tip upgraded DV, red top coils, iridium plugs, gt 2871r eliminator turbo (bought from ecs tuning) fmic catless down pipe, so my issue started after installing my new turbo once I had everything back together dbl checked everything! primed turbo before initial start car fired right up no leaks found - test drove ran fine hitting good amount of boost 25psi plus, had no issues for the first few days then I was accelerating in 2 nd gear and I heard a pop sounding like a blew a charge pipe off, car started to shake/ shutter until I let off the gas pulled over check all connections of charge system no issue found, now every time I get into boost around 3k it will shake/ stutter/ bog out until the throttle is released, car will rev in neutral and bounce off limiter with no issues, but when driving it will not hit boost at all, driving easy car runs fine but still no boost when trying to ease into the throttle checked plugs regapped to .28, boost leak test from maf to throttle body no leak found, replaced coils, no change, disconnected maf sensor plug no change, any one run into this issue before? Or have any advice as where to look next? Currently waiting for 034 billet pcv to be delivered and will be installing that soon as it arrives