
Originally Posted by
hodrosS42001
The N54 in stock form with bolt ons is a great highway racer. It has a much higher peaking and broader torque curve than a B8 S4. Similar to the B5 S4 it makes a ton of torque throughout the rpm range and that really matters in a roll race.
The turbochargers on the N54 are not very large, basically 2.7T K04 size.. And they dont flow very well either. They are good 450bhp turbos. The difference is that with the 3.0L, direct injection and the fact the engine is a I6 with good gas (racegas) or meth or especially e85 they can run a ridiculous amount of timing and reach MBT very easily.
The dyno numbers are a little suspect, as BMW owners love dynojets.. But they will make more than 400whp on meth/e85 on a Mustang pushed hard. But on pump they are way more tame.
Either way it's a great engine in stock form. They would truly be animals if they had a Dct.
Edit: if you are racing a 335 N54 and you're stage 2.. Start r in whatever gear allows you to begin at 5000rpm+ if you're a Dsg and you know you have them on the shift. If you both start 3-4k their torque will have them in front and they will stay there. Learned from experience :)
450
bhp? that was back in 2008 :) Now the world records are 500+
whp http://www.n54tech.com/forums/showthread.php?t=29669 ...I also recall reading about one with upgraded/larger diameter turbo inlet pipes that were in the 520whp area, but I can't find the article anymore. Basically, they have potential even with stock turbo's. Upgraded turbo's are 600+ whp (I recall the record being somewhere above 720rwhp). They are definitely putting down power, here is a stock turbo FBO one running with a 625hp S/C E90 M3 top-end
http://www.bimmerboost.com/content.p...6MT-E90-M3-S65
I put down 435rwhp with a Jb4 G5 ISO board, BMS back-end flash, 50% ethanol + 93 octane, dual-cone intakes, and intercooler. That was back before the platform just exploded with aftermarket stuff such as upgraded fueling and intake plumbing items and more aggressive flashes with straight E85, boost curves, and upgraded MAP sensors.
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