Ok past few day my 03 viii will stall out at lights. I fixed that by noticing the vacuum line on the DV was cut open so I fixed that now she runs real rough until I'm boosting and she will hit full boost about 28 and runs fine from what I can feel. When I'm cruising and its about to go in to boost from vacuum it will misfire. The check engine light is on and later this afternoon I will check the code on it. I will also do a boost leak test. Where else should I check? Thanks a lot guys!
My mods are 272 cams
evo 9 turbo
1300 injectors
tuning tech intercooler piping
mini battery
and running E85
and more.