| What year truck do you have, You might be able to get the dsp5 0r dsp2 for the lb7 or lly with tunes on it from them or I belive the newer models you can exchange the ecm but you are probably better of getting EFI cause when you add some upgraded parts you can have them send you a new tune and load it yourself. Plus if you buy EFI from some of them they will include a tune or two for you. Check out mmlmm and Rob and see what they can do for you |