the etk is a cd full of technical part information about all the bmw cars ever made. Has all the part numbers, diagrams on how they go together, and other neat info.
the ETM cd i have is the electronic diagrams for everything on the e36 bmw's
the TIS cd is the nice one, it is the trouble shooter bmw dealers use to fix problems with all our cars.
it gives step by step instructions and diagrams which is neat too.
'94 Supercharged E36 325is (150,000 original km's)
-Vortech V9 G-Trim @ ~10psi w/ BOV
-255LPH Walbro fuel pump
-TEIN SS Coilovers w/ Pillowball mounts
-Keskin KT1 17x8.5 & 17x10
-Remus full catback
-Authentic Rieger Infinity I body kit
-SMT6 EMS (Untuned)