Just wanted to get some ideas,
I always let my car warm up before I give it some VTEC therapy
But sometime it doesnt work at all,and car loses power just before 6k RPM,

Oil is at correct level,only thing I can think off is the VTEC Solenoid,Im thinking about changing the sensors...any thoughts?

 

Valve train clearances check.
Oil quality check, not just level.
Oil pressure check - VTEC relies on that as well as oil temperature.
Clean the VTEC solenoid oil filter screen