I pulled my codes and i have P0300 01 02 03 04 05 06 00 and P1399 Is this misfire on all cylinders? also one night i couldn't rev above 3 grand even when flooring it then i let off the gas kept driving and it went back to normal.. HELP ME

 

check your electrical system feeling all plugs
id also check timing on your belt

 

Had the same problem after I cleaned out my egr valve And Gave it a tune up make sure that u change the spark plug wires and make sure u use the the ngk ridium spark plugs on it don't use the boch spark plug those are crap