I've owned and driven Mopars since the 60's. I've rebuilt engines, trans, starters, alternators and worked on all sorts of carbs but I don't get the TBI. I've got a 90 Ramcharger w/318 and dual "point" injection. The truck seems to run great but won't pass CA smog due to too rich idle. Can someone point me in the right direction as to what to do? It's not like I can just adjust the idle screw like on carbureted fuel delivery. Please help.......