After throughout research I've discovered that I like the gdp monitor for quality and price but can I run it with out ez link I use a single tune from duramax tuner I tweaked and have no use for dsp2 or dsp5. I like the edge cts 2 insight but from my research it says that it has a lag or glich sometimes and nothing like that mentioned about gdp monitor plus gdp looks alot better can anyone enlighten me please cause I need one for a 02 lb7, 05 suburban 5.3, and a 06 lbz thanks