Was driving the car the other night (1999.5 a4) and she started missing real bad, no spark cylinder #2. traded plugs...coils with other cylinders no go. So did all my electrical testing took me back the the ignition module mounted on top the air box, from what i've heard/seen common failure items on the a4's. I ordered ecs's module from a company named beru(highly recommended by ecs), but I was just wondering how many other a4 owners this has happend to and what aftermarket/stock modules you ended up buying