it' an m104 just like it says on my siggy
. anyway i used standard bosch f8dc4's. they are fresh along with new coil to plug connectors (the beru's).
i have some techron in it now but maybe i'll take a run at it with a long drive beforehand. the tech said i just barely missed - but the last inspection two years ago, it was so clean with HC of 8 and CO of 0 (with fresh plugs)!