It seems the ALH can really only get to about 200-225WHP and still be reliable. The om606 however can handle 400-500 with just fuel and air even though its in a 1k lb hevier car i imagine itll still be faster and more reliable, im not 100% on that though. What i really like about the mercedes is it has the mechanical inline injection pump while the vw is electronic. The vw can be converted to mechanical but not much if anything is gained