Hey guys..I have a burning question. I own a 1993 B13 Sentra AWD which came with a SR20. The engine is non turbo, speed limiter works, all I do is drive frm work to home(Arouca to Champ fluers). I don't run this car hard at all even though I know t has a lil ting in it. Yet in the 3 yrs I have owned...