thanks in advance.. i have a 96GT. auto, convert. , 3;73,s with speedcal , added cai ,steeda under drives n T/A set at 16 , 70TB, and a new slp x pipe with hi-flow cats, , now my mil light is on,, i get lean bank 1 ,2 etc. i added a new IAC, and rebolted on the upper plenum and hoses for vac leaks etc. added new mil eliminators too.. hooked battery back up, check eng. light came back on. i,ve cleaned the egr /vac thing at the upper plenum. still have a mil light. it also has not idled smooth since the x pipe add on,s...... other than getting " CHIP " IM AT A LOSS.... put the orig. 6 cat h pipe back on and orig. air ? ported NA pi head swap w/ comp cams 270ah , frpp shortie headers all bought and coming soon, but wanted to get it inspected etc. first.... so i,d have a year to dyno-tune w/ chip for mods etc. and tweak it till inspection time. please also can email me at fyredog1@aol.com thanks again, Russ,,,,,,, hopefully 320RWHP. how long do you leave the battery disconncted? 5 mins. --- to -- 5 hrs.????