ray-ray89
IN10SS
I've not done one, but I don't really think it would be much harder than changing one's spark plugs. The only sticking point might be IF you have to pull/remove the injectors or not. I think you would only need to remove the fuel injector feed lines(and maybe replace a crush ring o-ring inside those lines. ? ) Take a look at my spark plug DIY...
135i Spark Plug replacement DIY...
http://www.1addicts.com/forums/showthread.php?t=602804
PS: Take some pics and make a DIY for use guys(!) IF you do this job.
