lt1 surging under Deceleration
#1
lt1 surging under Deceleration
After I had my fuel pump done sometime last summer I've been having a surge under deceleration but only when the engine is cold. It's not very noticeable but its pretty noticeable when I'm going downhill. It still pulls great, I use a friend's g35 as a yard stick and I can still walk him pretty well so its not down on power. Also it just now started missing at cold idle but isnt throwing codes or anything. Could it be the opti?