The AC was recharged last week and the clutch wouldnt turn on at all. It ended up being a relay. I fixed it the next day, I have AC but now the car is slow like the AC is on even when I have the climate control off. Sometimes it gets the power back but then it just cuts out and looses the power I know it has. Something else happened last night but has no affect on whats been happening. The belt has been shredding due to the supercharger pulley being pushed in towards the housing but it snapped. It sounded like an animal was underneath the car. The noise stopped, I opened the hood, didnt see anything though it was at night. I went on my way, I realized I had no boost, called my dad, he told me to drive it to a gas station and he'll come pick me up. Then about a mile down the road the check gauges light came on and the temp was up to 270 degrees I shut the car off pulled over. Found it had no belt, replaced it. No knocking or ticking but hasnt had the power it should since then. Just thought I should mention it though. What could be causing this lack of power? Thanks

Time to check your compression. Carefully inspect all 6 plugs at the same time.

How would I check the compression?