Quote:
Originally Posted by Red Bread
You asked why the opinion remains that the N54 was better. For the great majority of the N55 run, the N54 was a better lump.
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I don't necessarily agree with that, even with early N55s, unless you're looking for power over 400whp, and even that is started to get negated when adding aftermarket turbos, the later N55 forged crank, etc. Outside of the obvious reliability advantage, the N55 feels better and sounds better than the N54, but I only have mine tuned to around 360 whp. Also, the N55 had better cooling in the block.