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      11-07-2009, 01:47 PM   #11
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Drives: 2007 335i
Join Date: Jul 2006
Location: 4,500 feet above sea level

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Originally Posted by maswastage View Post
This is precisely the problem with tuning the diesel- the transmission is only designed to handle up to 500 or so lb-ft. Any more and you're seriously shortening its lifespan.

I'm happy for now but in the future I'd consider a mild tune up to about 300hp and 480 lb-ft. Any more is too much of a hassle.
It's not a problem. Just keep the boost lower at the lower rpm's so you don't exceed 500 lb-ft. Then max out the boost as the rpm's rise. The diesel torque falls off so fast that there will never be a worry of having too much torque higher in the rpm range.
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