I was talking to a guy at Performing Imports, Inc. in Roswell, Ga, linquiring about differentials choices for my car. He askied what mods I had done to the engine and when I mentioned the SI, he said I had thrown away that money. (he sells Dinan stuff, BTW). He said that all the SI does in remap the fuel curve, whereas the Dinan stuff flashes the firmware and changes the timing, VANOS and a bunch of other stuff. I said that the guys here at E46 thought the 2 were pretty comparable, and he basically said we were all dumbasses, and didn't know jack. Is it true the the Dinan software is far superior to the Comforti?