How to check for boost loss?

[tri-pedaler]

Hi all, it’s been a while. Been happily autoXing this car the past 3 years. However, it’s been feeling sluggish this season and seems low on boost (I’d be happy if it’s just driver error…)

I don’t have an AP sonce I run in a street class. Is there a way I can check boost levels without?

I have an OBD Link when OBDLink app.

I’ll look over the hoses next time I’m under there too…