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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > jb4 n55 questions



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      10-15-2013, 01:58 AM   #1
wwc310
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jb4 n55 questions

I am looking to purchase a used JB4 for the n55 engine and had a few questions.

1) Has anyone had their JB4 break/crap out on them? Wondering if it would be worth it to just pay the cost for the new one and get the 1 year warranty.

2) Are all JB4s for the n55 on the G5 board? Or should are there older boards out there that I should avoid?

3) Do all JB4s (new or used), need to be cut in order to work with ISO?
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      10-15-2013, 02:52 AM   #2
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No
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Yes, except the newest ones
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