I been havin some problems wit my 2000 GSR, when i take off then floor it in 1st gear from 1,000 - 4,000 RPMs its fine, but when i get Past 4,000 when the V-tec is exspoce to kik in my Car feels like its not movin like it should, n my engine dont rev as loud as it did, just sounds like as the RPMs get high the sound of the rev is the same, sounds pretty crappy, when i got home i looked at the oil n the whole dipstick was covered in like a Dark Black oil, does anyone know what could be the problem ?

 

search dude.