So I did an ls/vtec in my integra and I'm running into a few problems. The car is a 1991 acura integra. I have a gsr head, itr cams, aem fuel rail, edlebrock victor x im, and a b&m fpr. When cold the car idles really low like 700 give it gas and on the release it drops to about 250. Then when you hve it just a little gas so it hits 1.5k rpm it serges. Only at 1.5k not lower not higher. Also, it doesn't seem like vtec hits like it does in my boys h22. Lastly the tach reads 15mph off when moving.. What do you think?