warp2diesel wrote:
Banks has cranked the 3.0L VM up to 600Hp and it holds together well with their ECM tune, I can't speak for any other tunes.
The weak point of the 3.0L VM is the CP-4X High Pressure Pump. Our 2.8L VM has the much stronger CP-3.
VW has had a bunch of problems with the CP-4 and so has Ford on their 6.7L, they both blame the problem on Fuel Contamination so they can void the warranty, not because of the Aluminum body. There is a word on the street that Bosch is starting to stand behind the CP-4X in VW applications, if true, Ford will have Bosch quickly follow suit or their Lawyers will have heated conversations with Bosch. As far as I am concerned, the big shot at Bosch who pushed through the Bean Counter Engineering CP-4X through the Bosch Engineering Department should have to go spend some long time with those who have romantic thoughts about goats (imprisoned Terrorists).
If you buy a 3.0L VM or other Diesel with a CP-4X, keep every receipt for every fuel up, your Lawyer will appreciate it.
Correction: Banks "claims" that the engine can "handle" 600hp but never has it been tested anywhere close to that. I am only aware that the engine has been near 300-320hp just a few times (but not at Banks).
BTW, the pump is the CP4.2 that's similar to the Ford one but with a different stroke (hence different max flow rate).
The VW pump with the most issues is the CP4.1 (single plunger) on the L4 engine.