Alright. I have a 95 Gsr that I put a b20 vtec in. It was running fine just effed up idle so I got on here and saw someone put a post with the same issue. The post said to tighten the screw in the fast idle valve. I did that and it fixed it. Idles perfect now. The issue is I did that at about 10:30am on the 30th and I went and test drove it. Everythin was great vtec hit all the goods. I went to sleep woke up messed around at the house and left for work at 9:10pm on the 30th. Now for some reason my vtec wont hit. No cels and now im at work. When I got here I checked the oil the its perfect. Im going to check the vtec screen when I get off around 9 in the morning. My question obviously is, is there anythin I should check to figure this out. I can't believe I have no cels and its not hitting. Thanks to anybody with a reasonable answer.