Hey I just got a 99 A4 Q 2.8L used and the emissions light comes on. There is a hose that is not connected to the air filter box and I have a feeling this is the problem; the code that comes up is for secondary emissions. Im thinkin the previous owner had an intake that he took out before he sold it (got it from a auction), there is a missing elbow (90) and the dealer doesnt sell just the one piece. Is there any cold air intakes that incorporate the secondary emissions hose. The ones on ebay dont have a connect for it. Thanks

 

if you know the part you need, why not just check out the classifieds for someone parting a 2.8?