Our family recently got into a 15 GLA45, solved the rear differential clunk with a fluid change. New clamps to the fuel line between the hpfp and firewall, fixed the buzzing mid dash speaker.

We're coming from Audi platform so I'm not familiar with this car as our previous. My Audi diag program has a obd II and I decided to check fuel trims.

I'm sitting just under 15% at idle, no faults or stored faults show on a scan. When driving the trims drop just below 10% and immediately bounce back to 15%whem stopping at a light.

I'm going to smoke test the car on the cold side of the turbo and see if I can find any leaks. Does anyone have any insight on other places under the hood I can connect?

I'm not having much luck in diy videos for this platform, anyone know off hand where the charcoal canister is? Or any other weak points that could cause a lean issue?

Car has a weistec stage 1 tune and 5" intake. Recently installed a blow off valve and turbo blanket in hopes of extending turbo life and keeping heat down under the hood.

I'm thinking about basics like purge valve and intake trac, injector seals. but I haven't learned my way around the location of everything.

Any advice appreciated

 

https://photos.app.*******/6BN67KQdYsCapqkp7

Also noticed this, anyone else have this hiss going on? Repeats about every minute or so. You can hear it around the 27 second mark, compressor? Vacuum leak? That short ssss repeats over and over idling