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      08-20-2007, 11:52 AM   #1
hector
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actual output 128/328

it's pretty well recognized that the n54(135/335) is underrated. does any one know if the 128/328 motor is also underrated and if so by how much? i know there is actual dyno data for the n54 but i'm not aware if anyone has done the same for the n52.
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      08-20-2007, 12:43 PM   #2
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Very good question. I searched some forums, and came up with... nada. I'd love to see one...
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      08-20-2007, 12:52 PM   #3
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Quote:
Originally Posted by ducati View Post
Very good question. I searched some forums, and came up with... nada. I'd love to see one...
actually i did the same myself after i posted the question and also came up blank. oh well, bottom line same as u i'm gonna look at both the 128 and 135 when the time comes.
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      08-24-2007, 01:53 PM   #4
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http://www.e90post.com/forums/showthread.php?t=7801

Here's a Dyno for a 325i. It's making about 200 hp at the wheels. I would expect a 128i to make around 205-210hp @ the wheels with about the same tq. since it's the same size engine.
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      08-24-2007, 05:26 PM   #5
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Quote:
Originally Posted by bmwzimmer View Post
http://www.e90post.com/forums/showthread.php?t=7801

Here's a Dyno for a 325i. It's making about 200 hp at the wheels. I would expect a 128i to make around 205-210hp @ the wheels with about the same tq. since it's the same size engine.
Same engine. If E90 325i is getting 200 WHP out of a 215 SHP engine, then it might be reasonable to assume that the 128/328 get 215 WHP out of the 230 SHP application.
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