I have used the STE/ICE and it is handy, if you like carrying a big green box around. with the right cables, adapters, and transdusers; a STE/ICE can check RPM, Compression, Cylinder balance, Power test, dwell, fuel pressure, amp draw, ohm meter, voltmerter, and many other test that escape my memory. it's nice to hsve if one knows the ins and outs of operating one, but they are a pain to set up if the engine's not set up with the sensors i.e mid 80's/early 90's vehicles. with otut he manuel, it's a big green box with wires *L* it's easier to use multimeters, timing lites, dwell meters.. etc if your vehicle isn't equiped with a STE/ICE diagnostic plug. most STE/ICE's stay packed up and collect dust in most units and it is currently being phased out and being replaced by a rugged laptop version called a, "MSD" Don't expect any of them to become avalible anytime soon at govliquidators.com They run about 9 gransd a piece not including the "ICE"(internal combustion engine) adaptor module. AN interface to connect the laptop with all the old STE/ICE cables. Save the $$$, Buy a good diagnostic tools to work with your toys. STE/ICE is mid 70's technology. I'm sure someone out there has a couple PS magazines extoling the values of using the STE/ICE. They can even be used to check tire pressure *L*