testing my turbo

[fozzie]

Can anyone tell me how to know if my turbo is working or not aside from listening for it winding up. My fuel consumption has gone way up and I have a loud ticking noise when the engine is under load. I know it's a weird question but how can I tell for sure if it's my turbo. I've heard that the van will still drive without it working. Just trying to rule out possible culprits. Thanks

[Rattlenbang]

When the turbo isn't working it will feel flat, way more underpowered and she'll blow clouds of black smoke cause's it's not getting enough air.