Bumping the thread since I also want more info on the 135kw motors.
I can add this.
Mine was produced in 09/2003 and has the M57N-TU motor, 6spd Facelift with cd changer DSC Sport pack etc...
I test drove a 2003 today and it was a 5 spd manual, individual, 135kw M57 motor. No cd changer, tape deck? ASC and not DSC? It was a facelift as it had the mtech 2 bumper, same rear bumper and taillights as mine, blacked door beadings, nappa leather interior etc... (it even had a full toolkit!)
I was just surprised that it has old spec stuff on a facelift? ASC and tape deck, seriously?
Also the viscous fan sounded like a truck. Car still pulled quite strong bearing in mind it was a total stocker, with it's old wrotten cats in place, egr, etc...
It also had another device under the bonnet that mine doesn't have. Seems like a cooler of sorts mounted next to the intake manifold. The open area reserved normally for the petrol version's airbox... trying to look into this.
So we know that the cast manifold is bullet proof on the 135kw and the turbo lasts longer. The vacuum pump looks older and different.
Turbo's are garret GT2256v (135) and GT2260v (150)
Cast manifold vs stainless double layered skinny flaky manifold
Afaik 6 speeds only available on the 150kw. ('03/04 onwards only then)
Anyone please contribute.
Just confirmed on RealOEM that the (M57) 135kw does not have swirl flaps, I believe this could be limited to the manual only. All M57N have swirl flaps
http://www.bimmerforums.co.uk/forum/f74/whats-difference-between-m57-m57n-engines-t64860/
Copied from page 2 on the bimmerforums thread
2.9ltr M57 6D 1 engine.
e46 330d, e53 X5
Garret number GT2256V*
Turbine wheel inducer dia. ................. est. 42.35mm**
Compressor wheel exducer dia. ................ 56mm
V= Multi vane variable geometry turbine
e39 530d/e38 730d
Garret number GTV2556V*
Turbine wheel inducer dia. ................. est. 48.13mm**
Compressor wheel exducer dia. ................ 56mm
1st V= A platform change (whatever that means!)
V= Multi vane variable geometry turbine
3 ltr M57TU 6D 2 engine
e46 330d, e83 X3 (03-06, 201 hp)
GT2260V*
530d e60/61, e53 X5, e65 730d (215 hp)
Garret number GT2260V*
Turbine wheel inducer dia. ................. est. 42.35mm**
Compressor wheel exducer dia. ................ 60mm
V= Multi vane variable geometry turbine