Mine is an AWA3. I put AC injectors in and it smokes like a train when it get cold out. Smells like unburnt diesel and don't walk through the cloud or you'll reek the rest of the day.
People were using a beer koozie as a way to seal the opening from the box to the fender. Hence the name Koozie mod.
I need to replace my AIS filter and trying to decide to just replace it or gut all of it and throw in the Donaldson filter also. Tired of spending money on this thing.
Well got it together today and just got home from inspection. Windshield has a leak. Rear window has a leak from installing the later model window without a gasket. Couple other items to work on. Hate to but might be time to go byebye.