hi guys i need sum help badly. i hav an r33 gtst and in the last week i hav noticed that its been getting slugyish the more it gets driven. the engine sounds like its a rexxy wen im driving it and am concerned about the problems. i hav also been told that theres blue smoke cuming from my exhaust inbetween gears and hav noticed it myself at hi rpm, especially in 1st gear. i hav a new hi flow cat which is 3 weeks old aswell. i hav been told 2 possibly check the compresion in the cylinders but i hav no idea how 2 check that, would ne 1 know at all? i hav just noticed theres a fresh oil leak jus near the turbo but at the back of the engine possibly above the dump pipe. my cars gauges read rich wen im driving n would that b wats caused this or sumfing more serious? do u's fink its fixable or time 2 rebuild? and how much would it cost 2 rebuild and who would b the best?