Quote:
Originally Posted by YoungBlood
I mean, my N54 has trouble flowing more than 14 psi in the top end, stock N54 turbos are pretty small too. I'm at a high altitude and on high milage stock turbos too, with likely worn wastegates so that doesn't help a ton, so I'm not sure that a newer N55 would be much slower to be honest
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You need to review more than just one area of the power curve. The stock n54 twins may die off at redline too, but there is a good 1000rpm band (review around 4500-6300 rpms) where the stock twins continue to peak and the n55 stock twinscroll has already started to decline. That makes a huge difference and results in car lengths being pulled on the n55 once you get into 4th gear.