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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > 2008 335i build questions



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      03-27-2026, 04:50 PM   #1
hozzyxnc
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Drives: 2008 335i 6MT
Join Date: Mar 2026
Location: North Carolina

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2008 335i build questions

Hi all, i'm currently rebuilding my n54. I blew up the engine within the first week of purchasing it and it was due to a hole in the oil drain line for the top mount turbo (Precision 6266). I have a couple questions for you all if you could answer them because I am not that smart when it comes to this platform.

1. I ordered this kit from 5150 motorsports to build the motor:
(https://5150autosport.com/products/5...sONyzJale2cmvn)

This kit is rated for 1000hp or 900whp according to the people who sell it. I only want to max out at 800whp, would that be safe? I can't list all the parts that are installed on it because I am not the one who installed them (the 1st owner installed the aftermarket parts to run single turbo. i'm the 3rd owner)

2. What parts should I purchase and have installed to make this car last running that kind of power? It already has an oil catch can and upgraded intercooler. (i'm already ordering the 2-pin crank hub that insane performance makes.)

3. I know there's many factors that plays into this question but how long do you think this motor will last with supporting mods if i beat on it each weekend or every other weekend?

Thank you guys in advance!
Appreciate 0
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