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Old 12-06-2012, 10:34 AM
JoeFromPA JoeFromPA is offline
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Mein Auto: 01 M5, 08 535xit
Originally Posted by Jamesonsviggen View Post
I would like to know where the ceiling of the stock turbo is. At a certain point, it's out of it's efficiency range and it's working too hard.

I am thinking 300whp will be no problem with supporting mods(downpipe, intercooler, exhaust, stage 2 tune). But will the stock turbo support 320whp, 340whp?
Why do you think 300whp will be no problem?

300whp is alot of power out of a 2.0 liter engine with a small turbo sized for fast spool. You'll see 300whp out of 2.0 liter engines with larger turbos, sure, but with a turbo that is spooling aggressively below 2000 rpms on this size engine....I'd be worried about it's efficiency profile. It's got to push ALOT of air to achieve that, for it's size.
F80 m3 - 20k miles as of April 2015....08 535xit - 120k miles
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