I hope this is the right place for this.

Okay first time around i was getting misfires, fixed that, new plugs, wires.

Now i have knock senor and map sensor codes being thrown.

My ? is, just replace the knock sensor? The motor has piston slap, but after drivining it for 15 min it goes away.

The Map i have no idea what to do. I had the manifold gasket replaced the other day, had an oil leak. Someone help.