So I just purchased the 2011+ Lowering Springs by Megan Racing for my 2015 Scion tC. I might be installing them myself in my driveway with help but had a question about the bump stop. This will be my first time installing aftermarket springs so I'd like to know as much info as I can before hand.

I'm wondering how much do I cut off the bump stop.

Also has anyone installed springs without using a compressor?

Thanks in advance