Originally Posted By: JHZR2
Again, the "N54 has more forged internals" thing is a wife's tale.
If it's built more for cost, honestly I'll take variable timing on intake and exhaust all day long for routine day to day use.
I don't disagree that the two single turbo setup makes for more tuning options, but the rest isn't necessarily true. I'm sure the turbo design and variable timing makes tuning tougher, especially the turbo design. No doubt. But ultimately I think advanced turbos with more internal capabilities (motor/generator especially)!will come into existence so I'm glad they're moving tech forward.
The N54 was overbuilt. The N55 isn't, and it is a better more reliable engine when left stock or mildly modified. Both engines have variable timing on the intake and exhaust, that's VANOS. Valvetronic is valve-lift controlled throttle.
Again, the "N54 has more forged internals" thing is a wife's tale.
If it's built more for cost, honestly I'll take variable timing on intake and exhaust all day long for routine day to day use.
I don't disagree that the two single turbo setup makes for more tuning options, but the rest isn't necessarily true. I'm sure the turbo design and variable timing makes tuning tougher, especially the turbo design. No doubt. But ultimately I think advanced turbos with more internal capabilities (motor/generator especially)!will come into existence so I'm glad they're moving tech forward.
The N54 was overbuilt. The N55 isn't, and it is a better more reliable engine when left stock or mildly modified. Both engines have variable timing on the intake and exhaust, that's VANOS. Valvetronic is valve-lift controlled throttle.