And how do I set the cylinder to TDC?

 

Pull the spark plug and rotate the crank till you see the piston at TDC.

 

Soo I did another compression test today. The time before, I had used this metal extension that came with my compression gauge, this time I decided to not use it. Turns out that was causing my numbers to be really low, I now get between 160 and 170 for all the cylinders... So I think I am going to get chipped eventually. I just realized today my timing belt needs to be done since it was last changed at 70k so Im probably gonna try and do that first...

 

try it on a warm motor with the throttle wide open..