Hey all, just curious--- my 02 ls1 seems to have a little bit of a rough idle in it for the first maybe... 15 seconds of starting, then it learns the idle and goes to 900-1000 rpm just at a stand still, but if I rev it up any length, it comes back down to the rough idle spot for another 15 seconds or so then idles again--- any advice on what this could be? I'm running hinsons fuel system, and I think it is running really rich, but it may also be that I just have a vacuum leak somewhere right?

 

New injectors? Any tuning done?