[AndreyT]

I see that Tischer has been selling something that is listed as an "OEM BMW Performance Power Kit for N55 Engines" (PKN55POWERKIT)

http://www.trademotion.com/partlocat...catalogid=4462

What is this kit? This is certainly not the new ZMZ. Moreover, the way the ZMZ was announced suggested that ZMZ is the first official kit for N55. If so, what is that +20HP kit sold by Tischer?

Also, the ZMZ is software-only while the Tischer's kit also includes some extra hardware. If the extra hardware is really needed, then how come ZMZ does without it? (Oh... Looks like a know the answer to this one: ZMZ is only for Sport/M-Sport Package equipped cars, which include that extra hardware already.)

Does anyone actually have any practical experience with PKN55POWERKIT?

[AndreyT]

It must be this one

http://www.shopbmwusa.com/ProductDet...3434&perf=true