am trying to get a rebuilt ls1 running a Mutha Thumpa cam idling and running properly. Will use RAFPN etc but I cant really get it to idle so I can apply it. I know everyone says don't worry about AFR at idle but its showing 12.5ish at idle an 22 degrees if I use DVT and lean it out idle improves so I know its to rich. I've been reducing my VE in the idle area to fix this but how low will the VE end up? and will I end up with a very low VE and then a big step up as rpm increases?
Would anyone have a base tune that I could look at to make sure I'm heading in the right direction.