I have a 2003 2500 EC / SB Duramax, This is my 1st Diesel. I would like to boost my HP with one of the available computer programmers but Im not sure which would be best as im new to all this stuff. I dont want to go crazy just some extra HP to play with and to help out pulling my horse trailer. I think the attidude thing is very appealing but I am concerned with warranty issues, if I take it off can the dealer tell by its been there, I m not quite sure what limping the transmission means but im betting its bad and it seems that alot of you guys do this with the attitude. any suggestion would be appreciated.