I'm switching back to SAAB from my current BMW (had two 2.8 Aeros before) and have a few questions about upgrading the performance. Basically as soon as I get another Aero, I want to Vtune stage 0 it, then install a GS downpipe and midpipe. I do have a few questions before I do this. Will the tune work well with the new exhaust or will I have to go custom? Also, do you think I will have drone? My first Aero had a resonator and muffler delete and it droned super hard. I don't want to go through this again. I assume the downpipe will throw a CE light as well, can this be tuned out? Not worried about emissions as in Florida there is none lol. Lastly, I'm also considering upgrading the intercooler. Would this be/in what ways would this be beneficial to my car? Again I'm in Florida and it gets HOT but not sure if an intercooler is necessary. Thanks everyone!