Thanks for all that help, learned a few things in the process! It seems safe to say that this IMU is done from what I've checked. Will receive another one in a week or so and check how that runs.
Tested voltages on USB. 5.04V and 3.28V for appropriate connections. Seems OK.
Switched out for shorter wires - no results. I2C won't even find it anymore. Krodal's code won't give any output just the default print ins. After reducing pull-up resistance 2 times there's no significant change either. Krodal's code gives error 2s all the time then.