I've watched all those Dinan videos wherein Steve takes the viewer through the N55 upgrades and I am 99% sure that the "400" figure that he tossed out is going to be a crank number, not wheel. Think about it, even being extremely charitable with your driveline loss estimations, 400 whp is north of 450 crank. No way they are going to see that out of the factory turbo on just an upgraded compressor wheel. Keep in mind that the stock turbine will not be touched.
This upgrade from Dinan will be for a customer wanting something more than their stage 3 software. Dinan will dyno it around 350whp, claim 400 crank and the rest of the world will never be able to get it to put down over 330whp, just like all of the N54/5 stuff they make.
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