I have done intakes, full exhaust with down pipes and 2nd cat deletes, plugs and LAP3 boost chip on 93. The factory piping is extremely restrictive! I haven't dyno'd it but I do have the AWD GT2 and it absolutely rips now. Even with AWD and the nannies left on I can squeal the tires in comfort mode. With the roads damp its easy to slide the rear end out if I'm not careful. Luckily the car handles amazing and it's easy to recover from slides. In sports mode it's a monster, scary fast which is exactly what I was going for. It also sounds like a race car WOT. Something unexpected for those interested, installing the down pipes (SSR Performance) with the ARK Grip exhaust actually gives me less drone and moves the drone RPM's up. It was around 1800-2000 with just the exhaust, after it's more like 1950-2100 RPM's. 65mph cruising is quieter with the down pipes on which is exactly the opposite of what I was expecting. 80mph highway speeds though its actually worse drone than before, the only negative. Fortunately I don't drive on the highway that often.