abastarmda, here in California only very small amount of the dealers will do any performance work, since the EPA is passing out huge fines. For instance my dealer and 4 others in about a 75 mile range, will sell you the pipes, but will not put them on, sell you the tuner but will not install it,( but why buy anything from the dealer now that I have found great sites from the guys here at cvoharley to buy from) I tried to buy some 49 state head pipes and was told they couldnt ship them to California. Had the dealer say the same thing back when they did performance work like your dealer said but it is HE will warranty the work, that doesnt necessarliy mean another dealer in another part of the country will warranty the work, as I found out traveling on a trip one time. And yes they absolutely will deny coverage if they find you have taken out or altered the Catalytic converter, but doing a stage 1 and leaving the cat in doesnt accomplish much if your trying to get even minimal performance, kind of like kissing you sister, it doesnt mean a whole lot. So I think what some of the others are saying is true, if you alter it any past stock, your warranty is at risk, however the dealer that did the work may warrant it but good luck on the road.