| Re: Engine rebuild/upgrade project |
Subject: Re: Engine rebuild/upgrade project by flyboy on 2010/7/11 12:20:53 Is the rich idle fixed yet? It appears you have the speed/density (MAP) system and a much bigger cam than stock. This explanation made the most sense to me. The big cam causes lower vacuum at idle. The MAP sensor reads this to mean you are accelerating and gives more fuel causing the problem. The tuners job is to fix it. I had the exact same situation at idle with my LT4 "Hotcam", a much milder cam than tours. Yes, when the engine started to warm up it got real bad. I assumed this was from going into closed loop. It's fine now. Thanks for all the words and photos on the build. Sure looks nice. |
