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Old 09-09-2012, 09:38 PM
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av98 av98 is offline
ZHP = Patlabor
Location: SF Bay Area
Join Date: Dec 2006
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Mein Auto: Mini Clubmn,Odyssey,Miata
Originally Posted by floydarogers View Post
Presumably you're ignoring the S54 and other M engines.

Actually, the lighter N52 makes higher hp than an M54 and has a screaming 7K redline to die for. The '2006 330i is kind of the cult car of E90s because of it.
I have to agree on the S54 as a great engine but from a reliability and cost of maintenance standpoint I have to disagree. It's pre 03 1/2 oil journal issues along with the Double VANOS, valve adjustments and ITB quirkiness leads it to have more expensive maintenance issues compared to the M54.

The N52 is pretty impressive but not that much when compared to the ZHP M54 with the 6800 rpm redline. IMHO, both are a wash due to the E9x 330i's extra 150 lbs of weight, it robs any advantages or performance at all compared to an E46 ZHP. As for the E9x with the N54/55, I don't see those lasting 200k or even 300k miles just due to the nature of FI and the turbos giving out.

Last edited by av98; 09-10-2012 at 07:06 AM.
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